- Thursday bug bash - 16 July 2026
G'day Rat Racers!This new update fixes bugs, improves performance and adds some goodies that didn't initially make it into the last major update. This update also updates the Game Manual significantly to bring it up to date with the Anniversary update!Improvements:Improved GPU performance in cases where the GPU was pixel shader or texture fillrate bound.Increased the brightness of Beach's night time lighting.Improved responsiveness of the game's dynamic resolution scaling under high GPU load. This should resolve performance issues at high GPU load on some older PCs.Added an approximate latency measurement to the in-race HUD; this displays how delayed online race interactions may be, in ms, and is affected both by the system performance and the network latency of all players in the lobby. NOTE: This value may be different across systems in the same lobby; this is normal and is no cause f…
- Rattus Velocitas hotfix released. - 11 July 2026
G'day again, Rat Racers! This small hotfix resolves an issue where CPU players would overzealously avoid obstacles that were well out of the way, making them comically easy to beat in cases where they should have been pressuring a well-performing player a lot more. In particular, Forest races should be completely fixed now!
- Anniversary Update Part 2 is here! - 10 July 2026
G'day Rat Racers! THE new update has been released; this is part 2 of the Anniversary update, also previously known as the multiple laps update.Yes, it's been over 1 year since Rattus Velocitas Launched! For those reading this who have purchased the game, I thank you all for the support for this game so far. With this update, all achievement icons in your Steam Library should now be present; they were finished alongside this update.This update was originally slated for release on the 9th of July AEST, but QA caught a few snags that had to be polished off. I apologise for the wait!Highlights:Lap-based dynamic lighting! Desert, Forest and Beach now have varying light conditions based on how many laps the track generated with. Some differing lighting conditions even have their own hazards!Added a new Stage Hazard to Desert: Feral Hovercats. Only appearing at Night, these feline enemies wil…
- Rattus Velocitas hotfix released - 3 June 2026
G'day Rat Racers,If you found Laps and Finishes sometimes not counting in online multiplayer, this hotfix resolves this issue. Changes:Fixed a bug where laps/finishes weren't counting when crossing the finish line if at least one player in the lobby had high latency. NOTE: This does introduce a slight delay sometimes when completing a lap or finishing a race. This is intentional.Improved the client-side prediction implementation.
- Rattus Velocitas anniversary update part 1 released! - 30 May 2026
G'day Rat Racers, and welcome to part 1 of the Anniversary update! This was originally going to be released as one massive update in April/early May but due to extended development time, I wanted to get these changes out to you all early. In particular, online mode and race variety will benefit the most from these changes!Replays from past versions of the game will completely break as track generation was overhauled.Currently the game manual is out of date; this will be rectified with part 2.WARNING: Save files created/saved on this version of the game will not work on older versions! A backup of your original save file will be present next to your save once this update is installed and launched once.This also concludes the earlier server maintenance; the Matchmaking Server should be back up!Highlights:Races can now generate with more than one lap! Depending on total race course length,…
- Rattus Velocitas online mode maintenance. - 29 May 2026
G'day Rat Racers,The matchmaking server will be temporarily offline while a new game update is being prepared.The dedicated/GUI servers are currently on updated server versions that won't work with the current live game. This will be resolved with the game update releasing within 24 hours.
- Rattus Velocitas update released. - 19 March 2026
G'day Rat Racers!This small update contains two bugfixes for couch/controller players in the online mode:Fixed an issue where the "Leave Rat Race" button wouldn't be refocused properly if the player wasn't the lobby leader upon returning to the lobby after a race, breaking controller navigation.Fixed other cases of controller navigation breaking in a similar manner if a player left a Private lobby and you became the lobby leader.Both issues were able to be worked around by using a Mouse to click the relevant button but that's no fun! Happy Rat Racing! More details about the large update coming in April will be revealed soon.
- About the Demo version of Rattus Velocitas - 10 March 2026
G'day Rat Racers.For people on the demo version, after a game update, it may have completely stopped working around Christmas 2025 for Windows users. This was due to a mistake made during game upload I was only just notified about. This has now been fixed! The demo on Windows should now be playable once again.
- Rattus Velocitas update released. - 20 February 2026
G'day Rat Racers,Some critical bugfixes and some goodies from the WIP version of the next patch have been included in this update!Upgraded UnityEngine to 6000.3.8f1:Fixed a startup crash when using -force-d3d12. Please note D3D12 support is still experimental!Fixed an intermittent crash to desktop.Fixed a frequent crash-to-desktop on some Linux distributions. Arch Linux, I'm looking at you.Introduced a minor improvement to Physics Performance.Fixed a bug where it was possible to select an invisible button in the middle of the screen when selecting CPU difficulty with a controller.Fixed a LOD issue with the Santa Hat. No more randomly blocky Santa Hats. :DFixed a bug where ALL players in a replay are wearing the Santa Hat in replay data saved from before the Christmas Update. NOTE: This does break correct Hat playback on replays saved since the 24th of December to Today.Fixed a potential…
- The Future of Rat Racing in 2026! - 7 February 2026
G’day and belated Happy New Year Rat Racers! Today we’re talking about the content of the next major game update coming; release date is currently TBA but I plan to release it within April this year.I’ll start, once again, with achievements; I can confirm there are now item-based achievements in development as well as some improvements to them in general! In particular there will be a pop-up in-race when unlocking certain achievements now whereas before you wouldn’t see them until exiting a race when Steam’s Achievement UI is typically triggered. In addition, with the Hats system now in the game, I’ll be introducing new Hats that will be unlockable with the existing progression achievements!In particular, getting Rat Racing Apprentice will get a special Hat as currently, other than unlocking all game modes, there are no other rewards for this Rank.Speaking of progression achievements… I…
- Smol hotfix patch. - 24 December 2025
G'day Rat Racers, This hotfix update addresses a bug where a player's Hat selection didn't correctly save in replay data, resulting in players wearing hats being hatless in the replay.
- Rattus Velocitas update released - 23 December 2025
G'day Rat Racers,With this update, I have introduced the Hats system to the game! As a celebratory Christmas gift, every player that opens the game from the 25th of December until the 6th of January will receive a tiny little Santa Hat to put on their Rat Racer. Currently only player 1 will be able to use Hats; a future update may address this limitation. Please note that the System Clock must be set correctly for this unlock to function correctly.In addition, the following changes have been included:Item balance has been adjusted. The ??? item was appearing a bit too frequently while Portable Dash Rings weren't as frequent as they should be.Portable Dash Ring drop chance: 21% -> 22% (buff)??? item drop chance: 2% -> 1% (nerf)Significantly improved CPU players' ability to follow racing lines rather than the road directly.Optimised the performance of the Item System; now slight stutters…
- Rattus Velocitas update released. - 19 November 2025
G'day Rat Racers, A new update has been released with a number of new QoL changes to the game. About the item changes:Standard Missiles were far too common which made it super difficult to catch the first place racer while in second place or less, so their drop rate has been nerfed to pre-online update RNG levels. (Initially they were buffed to offset a now-fixed item RNG bug)There were also a lot of instances of the 1st place racer getting 7+ seconds ahead of others during races so to compensate for nerfing Missiles, the ??? item's drop rate has been mildly buffed to give players more windows of opportunity to take down 1st place. Cheese drop rates have been reduced as there was a number of frustrating instances of running into multiple Cheese baits on the race course.Portable Dash Rings were almost always a double item while also being rare to find, making some races too fast, so this…
- Final update for the week - 6 November 2025
G'day again Rat Racers.This small patch contains a fix for splitscreen audio being quieter than intended in some cases.
- Rattus Velocitas update released - 6 November 2025
G'day Rat Racers!This update contains the following changes:Fixed a bug where shields targeted themselves when refreshing already-existing shields. If your shield wasn't refreshing after using a second one or you were getting "cosmetic" shields that didn't work, this shouldn't happen anymore!Fixed a bug where the internal win-rate calculation could get stuck at 100% win-rate, even if you lost races.
- Rattus Velocitas minor update released. - 5 November 2025
G'day Rat Racers.This update fully resolves a bug where, if Steam Achievements data failed to properly load for any reason, Cheese Rocket Payloads became unobtainable in-game, with players passing through them instead.UPDATE 11/06/2025 AEST:This update has been re-released with the following changes:Fixed an enjoyment-breaking bug where both performance-based and random CPU difficulty wasn't applying at all.Fixed an issue where the win-rate calculation was incorrect, resulting in Quick Race eventually picking Easy difficulty every race.
- Rattus Velocitas update released. - 4 November 2025
G'day Rat Racers,This patch improves Missile behaviour in online mode; they shouldn't skip around as much when performing latency compensation anymore.Additional bugfixes:Fixed a potentially game breaking bug with scene loading that caused the game to freeze.
- Smol bugfix patch. - 3 November 2025
G'day again Rat Racers. I may have accidentally regressed replays, this small patch fixes them so items behave as expected again. All changes:Fixed a bug with CPUs where items were used immediately upon acquisition.Improved item usage heuristic used by CPU racers.Fixed a bug that could break replays if an item was acquired from a Cheese Rocket payload the same frame an item command input was used. (aka. Square or R2 on a DualShock(R) 4 controller)Slightly improved network time synchronisation of the race countdown.Changed the "winning race" condition for the win-rate system to only count 1st place finishes.
- Rattus Velocitas update released - 3 November 2025
G'day Rat Racers!This update contains bugfixes and an adjustment to performance-based CPU difficulty.Introduced win-rate based CPU difficulty adjustment for Quick Race. This replaces performance-ratio based CPU difficulty. Algorithm for this is simple; if you're routinely failing to place the top 3, you'll get easier opponents, and vice versa. This alleviates an issue where the performance ratio's boost percentage would droop too low and end up giving the player easier CPU opponents after a few races with next to no boosts present. Note that this means your first Quick Race after the update installs will be ridiculously easy, then it should even out as you play more races.Improved cross-client Cheese Rocket drop RNG in online races. Item drop rates from Cheese Rockets should now have a random chance close to offline races. Fixed an issue where it was possible for every player to get the…
- Rattus Velocitas update released. - 31 October 2025
G'day Rat Racers.This update contains some small bugfixes:Improved Dash Ring boost visuals to match an earlier version of the game's effects.Fixed a bug where Portable Dash Ring boost audio would cut off when the Portable Dash Ring began to fade out of existence right after a racer had passed through it.Improved cross-platform and cross-CPU determinism of the despawn timer for Portable Dash Rings. While likely not noticeable in the majority of cases, this should allow 100% reproduction of Portable Dash Ring behaviour when sharing a replay file with another player using a different CPU to the CPU of the machine the replay file was recorded on.Fixed a bug where Menu Select sounds would fail to play for the first two selections after pressing START (or the equivalent button) to enter the Main Menu from the title screen.Fixed an issue where the Replay List would continue loading in the back…
