Hamachi the Psychotic Killer — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| 1.3.1 patch | 2026-10-14 | fixed a bug in geno route where officer detaining hamachi would occasionally fail to die after hamachi gave him a c l o b b e r i n g, resulting in the officer becoming invisible and nearly invincibleadded world 4 “intro” sequenceadded frosty fog and gusty wind effects to select levelsenemy/object graphic polishnew title screen aesthetic triggers on august 13-16, inspired by japanese summer festivalsother:final boss encounter adjustmentsminor level design adjustmentsremoved C and Y button functionalityalso added short descriptions for a few of the characters on the website, check them out! https://hamachithepsychotickiller.com/ |
| 1.2 patch | 2026-07-09 | Changed the outcome of the Neutral ending to better reflect the character's terrible fate.Minor boss mechanic adjustments.Aesthetic updates to the title screen terrain and characters based on the real-world calendar. |
| 1.1 patch | 2026-03-20 | Gameplay• Reduced damage for most enemies and bosses, essentially increasing Hamachi’s hp from 6 to 12,• Increased Hamachi’s attack hitbox size from 8×8 to 10×10 (width/height)Bosses• During the first two boss fights, if the player drops to 2 HP, Penelope will spawn from either corner of the arena and provide Hamachi with sushi to restore health. This can occur once with each encounter. UI• Levels containing enemies should now display a counter showing:- Total enemies in the level- Number of enemies defeated |
| 🐛 patch | 2026-03-05 | Fixed a bug where the kill counter reset to 0 after dying on World 5/6 stage 1 if the game was previously exited on that level.Removed decorative ceiling spikes in the first dungeon that caused a crash when touched. (lol)Made slight adjustments to the pacifist/neutral final bosses. |
| Hamachi the Psychotic Killer Released | 2026-02-27 | I was able to reach a state with the game that I'm satisfied with much earlier than the planned release date, so here it is, after 8 years it's finally done. I hope whoever plays the game thoroughly enjoys it. I spent the entirety of February play testing/bug fixing and so I’m very confident it’ll be a seamless experience. However, if an unexpected problem occurs, I apologize! If you’d like to help me out, I have a pinned thread in the discussion area, where you can post crash errors/issues. Unless it's super specific, no need to explain how it happened, I can figure it out. But again, I’m confident the glue will hold. (hopefully). much love |
| release date: march 20, 2026 | 2026-02-06 | the release date for the full game is march 20, 2026 |
| the world of hamachi #6 | 2025-09-19 | happy fall, the last post was 2 months ago so I want to briefly share some stuff ive been working on World 4 has been added to the list of playable worlds. These four will be the only ones available until the full release.I made a few new batch of levels to have fun with that will become available around halloween called 'hamachi.exe', Im sure you can figure out what inspired that name.I suggest that when you play these new levels, you make sure to increase your volume up by a lot to really immerse yourself with the experience.. in regards to the main game itself, im focusing my time on wrapping up the actual bosses now. I've finished coding |
| the world of hamachi #5 | 2025-07-23 | *below is a preview of content not currently present in-game World 6 World 7World 8 main menurefined story textive recently completed level design for world 6, world 7, and world 8, so here is a few photos of them! its late game so im not going to show much. heres where things are at now in terms of level design: world 1: done ദ്ദി(｡•̀ ᗜ |
| the world of hamachi #4 | 2025-07-11 | *below is a preview of content not currently present in-game World 4World 3 ive recently completed level design for world 3 and world 4, so here is a photo dump of the two! heres where things are at now in terms of level design: world 1: done ദ്ദി(｡•̀ ᗜ |
| the world of hamachi #3 | 2025-06-13 | he has mail for you, a preview of some small content planned for june 25th •ᴗ• some may already know, i want to keep things fresh and gradually introduce new content while im stuck in The Backrooms stitching together the main game, and im doing so with 'challenge levels'. they're short but tougher levels that reward a steam achievement upon completion. now featuring their own dedicated menu screen, the 2nd one will go live soon, a total of 10 are planned. (that thing floating above the screen may or may not wake up and freak out once you finish them all) Challenge Level #2 Story: The demon possessing Hamachis mind (Demon Queen Deity) is in se |
| the world of hamachi #2 | 2025-04-16 | i... am steve, and this is #2 of a series of posts ill be making to act as a space for me to just talk and yap and share things that im working on: to start off, the website has now evolved into its final form (for now at least), its very clean, very presentable. and an html5 version of the game can now be played from the website, to some degree at least. this game now exists on windows, mac, your browser, if theres demand for it, maybe one day linux, or a toaster, maybe one day in movie theaters and I can get Chris Pratt to voice act the characters. *the following content im talking about here is not available in the current version of the g |
| the world of hamachi #1 | 2025-04-04 | hello, this is #1 of a series of posts ill be making to act as a space for me to just talk and share things that im working on, occasionally ill share some quirky unexpected bits that Ive encountered during development too... like this: https://i.imgur.com/XUvA20l.png when I was setting up the Mac build, a sentient cloud spawned in the water out of thin air, the enemies walking around the stage floor turned into tiny bits of themselves, and the "press start" text turned into- another cloud https://i.imgur.com/OHBHNh7.png or if you press '6' on your keyboard, the game will slowly die from lag as it endlessly spawns enemies, and invisible objec |
| Mar 19: 𝒽𝑒𝓁𝓁𝑜 𝓂𝒶𝒸𝒾𝓃𝓉𝑜𝓈𝒽 | 2025-03-19 | https://i.imgur.com/HtSCsiR.gif Mac support is now available. Since this is the first time the game has been released on Mac, I strongly recommend trying the demo before considering purchasing Early Access. This will help ensure the game runs smoothly on your system. If you encounter any issues, please let me know—I greatly appreciate all the feedback I have received so far. |
| Update for Mar 1 | 2025-03-02 | https://i.imgur.com/kUGvNsr.gif Added: Attack Mode Toggle Normally, when you press the attack button, the character comes to a complete halt until the animation ends. Now, you can toggle this off or on anytime during gameplay, indicated by a lock graphic. This allows you to spam the attack button and maintain full movement. The attack will register in the direction you're facing when you press the button. Adjusted Enemy Knockback Sometimes when you would bump into a pair of "enemies", they would blast you off into the stratosphere, I've turned a 1 into a 0 so (hopefully) this won't happen anymore. Although this should be fine for now, I need |
| 1.1: Update Notes for Feb 10 | 2025-02-11 | Added 2 new achievements. Introduced a new Challenge Level. A dedicated menu for Challenge Levels will be added as more are introduced. Salutations Feline’s attack damage has been nerfed from 1000 to 987.5. Hopefully, this keeps things balanced. Added dialogue for cops—please refrain from tampering with the community’s highly important government-issued wetness dispensers, which exist to keep the grass in Riches Reef slightly less dead. Adjusted movement timer for Major Domo Doomsavant's Genocide fight. Published Game Manual |