- 🚀 Hostile Mars Playtest Begins Friday, September 4! - 1 September 2026
We’re excited to announce that the Hostile Mars playtest will begin this Friday!Access will be granted gradually, starting with a small group of players. This will help us monitor stability, identify any critical issues, and respond to early feedback. If everything is running smoothly, we’ll welcome a larger group of players into the playtest shortly afterward.The playtest will remain open through September 13th. If you’re interested in taking part, request access using the Steam Playtest button on the store page. We expect to open access more broadly as the test progresses, so don’t worry if you aren’t admitted immediately.This is an active development build, and your feedback will be incredibly valuable. If you encounter a bug, have trouble understanding something, or simply have thoughts about the experience, please let us know in our Discord.Thank you for supporting Hostile Mars. We…
- 🚀 Hostile Mars Devlog: Combat, Automation, and Base Repair - 1 July 2026
Over the last few months, we’ve moved Hostile Mars into a bi-weekly build sprint format, with a new playable build every two weeks for the team to test and give feedback on. This has helped us tighten the development cycle, implement features more quickly, and put more focus on tuning, progression, and the overall player experience. Much of that work has been aimed at making the game feel sharper, more reactive, and more dangerous by strengthening the connection between combat, automation, base-building, and progression, so that every system feels like it is pushing or pulling on the others. Bots are becoming more threatening, machines are becoming more important, building and repairing your base has more weight, and the world itself is starting to take clearer shape.Player ThreatsWe have implemented several new systems that create more immediate threats to the player during waves. One…
- 🚀 Hostile Mars Devlog: Status Effects, VFX, and Region Expansion - 3 April 2026
We’ve made some exciting progress over the last month, and a few pieces of the game are starting to come together in a way that feels really promising. We wanted to give a quick overview of why the status effect system feels like such a big step forward, some of the VFX work we’ve started adding, and a bit of the progress we’ve made on progression out in the world.Destruction MattersWe briefly touched on status effects last month. We’ve been leaning further into the status effect system, and it’s quickly becoming one of the most interesting core mechanics in the game.Since the beginning, a big part of Hostile Mars has been destroying bots and harvesting their scraps to expand your base. What we like about the status system is that it ties directly into that loop in a way that feels natural and rewarding. The way a bot is taken down can now affect what you get back from it.For example, i…
- 🚀 Hostile Mars Devlog: Status Stacks, Critical Shots, and Elite Enemies - 2 March 2026
February was a big production month for Hostile Mars, with a lot of progress focused on making combat and defense planning deeper, clearer, and more rewarding. We have a mix of new gameplay-facing additions, major under-the-hood upgrades, and a batch of fresh concept and model work from the team. Here’s what we’ve been building.Critical shotsTo reward good combat play, we expanded our damage modifier system to support critical damage events that apply a multiplier. We also added a shape filter to modifiers, which lets us define specific areas on bots where damage changes.That means we can create real weak spots (or armored zones): hit the right part for crits, hit the wrong part for reduced damage, or make a bot vulnerable to a damage type only on a specific component (like a wheel). It’s already making enemies more interesting to fight, and yes, it might encourage getting a little clos…
- ⚡ Hostile Mars Devlog: Reactor Power, Trap Strategy, and Smarter Bots - 2 February 2026
December and JanuaryDecember and January were big production months for Hostile Mars, and a lot of the work was aimed at making moment-to-moment gameplay decisions feel sharper and more impactful. We also have some concept work from the team to show. This devlog is a mix of gameplay-facing improvements and the deeper systems upgrades that let us keep accelerating development.Power is built, not grantedPower generation in Hostile Mars is shifting toward something you actually construct and expand.Reactors generate your power. If you want more available power, you build more reactors (and keep them connected to your grid).Reactor capacity is tied to progression. As you push deeper into wave progression, you unlock additional reactor slots in that region. Early on, you are forced to make real choices with limited power.It is not just “build X reactors and you are done.” Reactors can be upg…
- 🚀 Hostile Mars Devlog: Core Runs, Smarter Scrap, and More Bots On Screen - 8 December 2025
📝 November Devlog: New Regions, Smarter Scrap, More Bots On ScreenNovember was about three things:Giving you a way to push into new regions that feels like an actual missionMaking Yield the clearest expression of turning broken bots into progressLetting us pack more robots into the simulation without turning your PC into slagPlus, Facility Research Centers and new concept art to glue it all together.🚚 Core Delivery Vehicle: Bringing The Fight Somewhere New** Yes, the transport is placeholder. Please mentally replace it with the most overbuilt, beautifully engineered convoy you can imagine and pretend we already finished it.The Core Delivery Vehicle is how you expand into new regions of Mars. You load a region core onto it, then escort it across the map to a socket in a new area.The route is dangerous, with a lot of enemies along the way, and every deployment runs on a strict stability…
- 🚀 Hostile Mars Devlog: Playtests, Regions, and a Friendlier Build Mode - 1 November 2025
🚀 Hostile Mars Devlog - Focused Playtests, Regions, and a Friendlier Build ModeWe went quiet for two months to refocus and playtest. The result: a clearer, tighter game plan and a much friendlier loop. We cut features that weren’t pulling their weight, doubled down on what makes Hostile Mars sing, and fixed a bunch of “why is that enemy under the ramp again?” moments. Here’s the fast tour:🧪 Internal Playtesting & Defining the GameWe put a lot of hours into hands-on testing and hard calls. The goal was simple: sharpen the core loop so you spend less time wrestling systems and more time building, defending, and expanding. We now have a locked-in direction for finishing: regions as the backbone, waves that stress your choices, building that scales without becoming a chore, and UI that tells you what matters.*gameplay footage includes some block-out quality models/textures and placeholder…
- July Devlog: Foundations, Smarter Selection, and Dynamic Power for Hostile Mars - 1 August 2025
July was a month for groundwork—literally and figuratively. While much of our focus was on core building systems, the art team continued to shape the world’s industrial identity. Here’s what’s new and in progress on Mars:🏗️ Foundations: Laying the GroundworkThe placement system got a major upgrade this month, making building both smarter and more flexible:Adaptive Snapping: Buildings now snap more intelligently to their surroundings, speeding up construction and reducing headaches.Build Stages: We introduced clearer build stages, from request to “ghost” preview, so you always know what’s being placed.Automatic Dependency Placement: The headline feature: foundations! Now, panels must connect to a foundation to be considered grounded. Foundations also help fill terrain gaps that don’t match the grid—perfect for smoothing out rough ground.Yes, you can pour concrete over the whole world (i…
- Devlog 41: Automation, Regional Progress, and Loot Physics on Mars - 1 July 2025
There’s a rhythm to building on Mars: some months are all show, others are about wiring up what’s underneath. This month was about connecting those wires - automation, regions, and enemy escalation - so that every new area feels distinct and every system supports the next.⚙️ Automation: Machines That Work for YouMuch of this month was spent improving the backbone of the game’s automation. Machines and containers now automatically handle their own input and output, letting resources flow between systems with minimal player intervention. This is a big step toward the fully functioning, player-driven supply chains that make large-scale defenses possible.🧪 Item Pickup Performance: Stress-Testing at ScaleSometimes the only way to be sure your code works is to try to break it. That’s why we decided to drop over 18,000 items in one spot, just to see what would happen. (Sorry, Mars.)The result…
- May Devlog: Builder Drones, Smarter Placement, and Regional Systems Expanded - 1 June 2025
🪐 May Devlog – Stabilizing the Surface This month wasn’t about flashy reveals, it was about structure. Literal and metaphorical. We focused on grounding major systems: how buildings are placed, how objects are initialized and powered, how regions are managed, and how players interact with the game on a technical and mechanical level. In short: the scaffolding beneath the chaos. Let’s walk through what got done. 🧱 Building the Right Way ➤ From Grid to Grounded Placement We replaced the old grid-based building validation system with a simpler, more reliable collision-based query. The previous system had grown too complex and fragile, especially around terrain and object interactions. The new approach makes building feel smoother and frees up designers to create more intuitive, flexible placement rules. ➤ Builder Drones Take the Lead Instead of snapping buildings into existence, we’ve st…
- April Devlog: UI Rebuild, Drag-and-Drop, and Build Mode Rework - 2 May 2025
🚀 April Devlog – *Into the Red* It started like any other mission. We gathered in the virtual war room, surrounded by sticky notes, half-written TODOs, and that one monitor that always flickered for no reason. The goal was simple: make *Hostile Mars* better. The goal was simple. The execution? Pure chaos. --- 🧱 Act I: The UI Crisis Our first battle was a mess of windows. Menus overlapped. Panels wouldn’t close. Some UI elements had developed... minds of their own. The system we’d once duct-taped together had become a rogue AI with a grudge. We needed a fresh start. So we tore it all down. We built an entirely **new modular UI system**, piece by piece: - Windows that knew when to stay in their lane - Panels that could be dragged around like civilized interfaces - A smart visibility system that kept things clean and conflict-free - An in-game debugger panel to monitor open windows and h…
- Devlog #38 | Benchmarks, Better Bots Through Automation, and Unity 6 - 1 April 2025
Hey Defenders! March has been all about foundations and future-proofing. We’ve been deep in the trenches building tools, polishing visuals, and tweaking systems to ensure Hostile Mars scales smoothly as we introduce more chaos, more bots, and more explosions. 🧪💥 Let’s take a look at what we’ve been working on this month! Benchmarking the Botpocalypse With all the traps, enemy types, and new mechanics coming together, performance is top of mind. So, we built a dedicated benchmarking tool that allows us to spawn enemies, activate traps, and simulate intense scenarios in controlled test environments. This new tool lets us: Measure framerate impact Analyze how different bots react to certain setups Identify performance bottlenecks early It’s already helping us diagnose potential problems before they hit your base. Plus, it’s just fun watching hordes of bots get obliterated in controlled c…
- Devlog #37 | A First Look At The Character Exoskeleton - 3 March 2025
Welcome Defenders February has been a month of major refinements, fixes, and experimentation as we continue to evolve Hostile Mars. From pathfinding improvements and turret firepower to spawn system balancing and trap adjustments, we’ve been hard at work making the game feel even better. Let’s dive into what’s new! Size Matters – Large Enemies & Movement Improvements Bigger enemies bring bigger problems, and we’re working to make sure they navigate and behave properly in your mazes. Turns out, size definitely matters when it comes to AI movement! Bottleneck Detection Fixes – The system that detects stuck bots wasn’t sensitive enough to larger enemies. Previously, it only triggered when 30+ bots were jammed in one spot—not very useful when a single Foreman takes up the space of several smaller bots. Now, it properly registers when big enemies are causing blockages. Improved Terrain Adapt…
- Devlog #36 | Wave Refinements, Ramps Return, and New Deadly Traps! - 1 February 2025
Defining the Core Wave Gameplay This past month, our main focus has been refining how enemy waves interact with player defenses. That meant a lot of cleaning up, bug fixing, and fine-tuning the systems that make waves function properly. The goal? To lock in the core mechanics of enemy waves and establish a solid lineup of defenses that showcase different strategic possibilities. The process was something like this: brainstorm wave or defense mechanics, implement them, test, find a bug, fix it, break something else in the process, repeat. While we have a few new traps in the mix, this month was more about refining what’s already there rather than introducing tons of flashy new features. A big part of this was improving enemy pathfinding and refining behaviors. After plenty of tweaks, bots are much better at navigating—fewer traffic jams, less aimless wandering, and (hopefully) fewer case…
- Devlog #35 | Big Bots, New Traps, and Arc Missile Mayhem! - 1 January 2025
Welcome to our December Dev Log! As the year comes to a close, we’ve been busy wrapping up some exciting developments for Hostile Mars! From experimenting with enemy sizes to introducing thrilling new traps, this month’s update is packed with progress. Whether it’s refining our systems or exploring creative new ideas, we’re pushing boundaries to make the game even more engaging. Let’s dive into the details! Size, Speed, and Mass This month, we went all-in on enemy experimentation—playing with sizes, speeds, and masses to find that perfect flow of oncoming threats. In the process, we defined our base enemy types and hammered out their proportions. Once locked in, these stats will help us shape trap design and progression moving forward. If you spot some colorful boxes, don’t worry—those are just placeholders for our future mining bots, letting us rapidly tweak size, mass, and speed. Take…
- Devlog #34 | Traps, traps, traps, traps, traps - 3 December 2024
Hostile Mars Development Update Hello, Mars pioneers! Welcome to another development update for Hostile Mars. This month, we've focused on new traps, wave system improvements, bug fixes, and build mode enhancements. Let's dive into the details. More Traps We're excited to announce several new traps we have been testing, expanding your defensive options and strategies. These traps are designed to give you complete coverage over different enemy types and scenarios. (Please keep in mind we're still prototyping these traps using our finest 'programmer art' - Our art team will work their magic soon enough.) Conveyor Trap Continuing our prototyping of new traps, we're testing The Conveyor Trap! This ingenious device manipulates enemy movement by pushing them while they're stunned or slowing them down by shifting them to the side. Use it strategically to direct enemies into other traps or to d…
- Devlog #33 | Maze Mechanics, New Enemies, and Base Design - 1 November 2024
Hostile Mars Development Update Hello, Mars engineers! Welcome to another monthly development update for Hostile Mars. We've been hard at work enhancing the gameplay experience, focusing on maze design, enemy diversity, and base-building mechanics. Let's dive into what's new this month. Enemy Congestion Events Building on last month's work, we're emphasizing the importance of managing bottlenecks in your maze designs. Significant congestion will now trigger a timed warning, giving you insight into potential issues and an opportunity to address them before the bots react. Be cautious—failing to design your maze to scale can have serious consequences! Prototyping Enemies While focusing on the tower defense aspect, we're exploring new enemy variants to enhance diversity and deepen strategic gameplay. We've been prototyping extremely fast bots, others that resist most damage types, and even…
- Devlog #32 | Forging the Future: Combat, Power Systems, and New Wave Mechanics - 10 October 2024
Welcome to the October 2024 Hostile Mars Devlog! As we get further into development, the team has been hard at work refining every aspect of the game, from waves of enemy robots to player-driven systems and mechanics. This month, we’ve been focusing on improving the core combat experience, enhancing the game's systems, and introducing exciting new features that will shape how you defend Mars. Let's dive into what’s new and get you prepped for the battles ahead! Combat-Focused Development We’re currently isolating the wave system and Home Base defenses, doing a deep dive into traps, turrets, player weapons, and enemies to see how they can be optimized. The goal is to make waves not just challenging, but also full of interesting choices for the player. Expect big changes! Once we’re satisfied with the core wave mechanics, we’ll layer the manufacturing and logistics systems on top to furth…
- Devlog #31 | Explore What's New: Hostile Mars September Dev Log Highlights! - 1 September 2024
Welcome Back, Defenders! Public Pre-Alpha Demo Results The public pre-alpha demo of Hostile Mars, launched during Steam's Tower Defense Festival, was a resounding success! Over 2,500 users engaged with the demo, averaging two hours of playtime each. We’re thrilled with the turnout and deeply grateful for all the feedback received through the post-demo survey. It has been instrumental in guiding our enhancements. If you haven’t had the chance yet and would like to provide feedback, you can still do so here. Your feedback has given us clear insights into what’s working well and where we can focus our efforts to improve the game. We’re particularly grateful for the constructive suggestions regarding features that are still in development, such as the outpost system. This system is designed to provide unique experiences and unlock new technologies with each completed outpost, and we’re exci…
- Devlog #30 | Public Demo Countdown, The Ripper, and Major System Overhauls! - 1 July 2024
Public Demo The public demo is almost here! Hostile Mars is excited to participate in the Steam Tower Defense Festival, featuring our latest demo! The festival kicks off on July 29th, but you can dive into the action early with the public demo going live on July 26th. Get ready to defend Home Base! If you experienced our last public demo, prepare for a whole new adventure! This demo has been completely overhauled from top to bottom, with revamped game mechanics, enhanced enemy behaviors, and a host of new features. Get ready to dive into an even more thrilling and immersive Martian battlefield! Let's take a look at the things we've been working on for the past month: The Ripper We've been crafting a weapon that truly captures the essence of Hostile Mars. With our focus on battling massive waves of enemies and physics-based interactions, we've created "The Ripper." The game kicks off wit…
