Full game metadata
| Field | Value |
|---|---|
| Steam app type | game |
| Steam App ID | 4406640 |
| Live current players | 1 |
| SteamPulse tracked peak | 20 |
| Live count (today's peak floor) | 1 |
| Price | Free to play |
| Free to play | Yes |
| Discount | 0% |
| Original price USD | — |
| Current price USD | Free |
| Release date | Feb 24, 2026 |
| Developer | SmallShip |
| Publisher | SmallShip |
| Owners estimated | Not available |
| SteamSpy owner estimate minimum | Not available |
| SteamSpy owner estimate maximum | Not available |
| Review type | Mostly Positive |
| Positive review percent | 79% |
| Positive reviews | 31 |
| Negative reviews | 8 |
| Total reviews | 39 |
| Steam recommendations | Not available |
| Achievements | 5 |
| Average playtime forever | Not available |
| Windows support | Yes |
| macOS support | No |
| Linux support | No |
| Parent game | Not available |
| Store URL | https://store.steampowered.com/app/4406640/ |
Short description
Secure the vaccine and escape the infested facility! Battle your way from B9 to the surface rescue chopper in this isometric roguelite shooter. Restore power, upgrade your gear with Bio-Samples, and protect humanity's last hope against endless waves of the infected.
About this game
Game Story Deep within a top-secret underground facility on floor B9, you have successfully developed the vaccine for the zombie virus. Immediately after, the facility is overrun by the infected. Your mission is clear: Protect the vaccine and reach the rescue helicopter on the surface. Game Play Minus Nine is a survival shooter that combines classic arcade action with the strategic depth of a roguelite, presented in a Top-down Isometric View . Explore to Survive Your journey begins at -9F. The layout of the facility changes every run through procedural generation. Utilize the isometric perspective to plan your route and locate hidden Generators in the dark. Only when full power is restored will the elevator gates to the next floor unlock. Strategic Combat & Upgrades Ammo and health are scarce resources. Eliminate the zombie hordes and extract "Bio-Samples" from them. Use these samples at the Rest Area —the elevator between floors—to upgrade your Damage, Health, Ammo Capacity, and Speed . Death and Rebirth Death is part of the process. If you fall to the infected, you will lose your gear and wake up back at -9F. But do not give up. Your skills and experience are the only keys to escaping this hell. Key Features Procedural Generation: A constantly changing labyrinth with randomized enemy spawns. Isometric Action: Tactical top-down gameplay that requires precise aiming and positioning. Upgrade System: Enhance 4 core stats (Health, Damage, Ammo, Speed) using Bio-Samples. Intense Atmosphere: Dark underground environments, dynamic line-of-sight mechanics, and immersive sound design.
Supported languages
English, Korean, Russian, Japanese, Simplified Chinese, Traditional Chinese, Portuguese - Brazil