Screenshots
Watch trailer on Steam ↗MORTALITY DECOMP. KILLERS
CUPPAKILL · Published by CUPPAKILL · Official site ↗
Content notice: Contains lots of gore and violence against crooks and criminals, plus brief mentions of violence and drugs.
Very Positive — 81% positive (109 reviews) · 38 achievements
Last updated 7 Oct 2026
When a parasite reawakens detective Clive from death, he is recruited into a secret taskforce to stop those that killed him from weaponizing this newfound immortality.
Action, Indie, Free To Play · 2025 · More free games
Discover a thrilling tale of revenge as detective Clive, reawakened by a parasite, battles those who seek to misuse his newfound immortality. Experience intense action and free gameplay in MORTALITY DECOMP. KILLERS from CUPPAKILL.
About this game
JUST LIKE IN THE PAPERS.
MORTALITY DECOMP. KILLERS is a short, fast-paced 3rd person horror/comedy hybrid of games like Hotline Miami and Post Void, with hand-drawn visuals inspired loosely by retro detective comics. You'll step into the well-polished shoes of Clive, an undead detective working to take down the criminals that initially killed him.
LIVE. DIE. LIVE AGAIN.
When a parasite reawakens detective Clive from death, he is recruited into a secret taskforce to stop those that killed him from weaponizing this newfound immortality. Slay crooks and goons in semi-linear corridor levels that are built for honing in and optimising your own quickest path through. Prepare to die, and then die again.
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10 or 11
- Processor: Intel i5 2nd gen or Equivalent
- Memory: 2 GB RAM
- Graphics: GeForce 9800GT Or Equivalent
- Storage: 1 GB available space
- Additional Notes: Take these requirements with a large pinch of salt.
Supported Languages
Latest news
AnnouncementsOfficial
NEW FREE FPS OUT NOW
MY LATEST GAME IS AVAILABLE NOW FOR FREEWHAT'S IT ABOUT?At the end of Earth, Nilus, the God of Gore re-incarnate, lays waste to the last standing battalion - A corrupt oppression with ties to his past.Juggle between stolen weaponry and discard empty guns straight into enemy faces! Execute powerful kill animations to regain health and dash across the arena! Combat in REINCARNAGE is a dance of balance where enemies can be both your ammunition, your lifeline and your demise.HOPE Y'ALL HAVE FUN!This is my edgiest project so far and it's likely to remain my edgiest, since I'll be moving onto some sillier shenanigans beyond this point (comedically, that includes the next two episodes of my OTHER violent shooter, Bane Murrain)!I hope y'all can have some fun with this one and use it as a vent outlet the same way I have. As for later updates, I'm sure I'll have fixes and game-modes to add the same way I did with Mortality Decomp. Killers. Eventually.I won't be making any DLC for this one beyond the Support Expansion, but I might update that alongside the main game at some point. Who knows.Anyway, that's all! Have fun!- EliasRead full article on Community Announcements (DragonbornElias)AnnouncementsOfficial
REINCARNAGE IS COMING
Annihilate everything. September 1st.(...and the entire base game will be free!)WHATS IT ABOUT?At the end of Earth, Nilus, the God of Gore re-incarnate, lays waste to the last standing battalion - A corrupt oppression with ties to his past.There is no reloading - Juggle between stolen weaponry and discard empty guns straight into enemy faces! Execute powerful kill animations to regain health and dash across the arena! Combat in REINCARNAGE is a dance of balance where enemies can be both your ammunition, your lifeline and your demise.WISHLIST HEREThe entire base game will be released for free on September 1st, with an optional supporter pack planned with some bonus paid content.I hope y'all like it! It's a total edgelord-fest.-EliasRead full article on Community Announcements (DragonbornElias)AnnouncementsOfficial
v2.2 - 1 Year Anniversary!
Hey y'all!It's been a whole year since the release of MORTALITY DECOMP KILLERS! I didn't expect so many people to play this game at all when I was making it and the game's evolved so much thanks to your reviews, messages and support. Thanks for playing everyone!I've added 4 Master Levels to the game for y'all to munch on. It's not anything huge, but I've been very occupied with Bane Murrain: Episode Two, which is coming out in a month or so.There's also new music over on Bandcamp, that'll make it's way to streaming within the next few weeks or so! Two new original songs and multiple covers in the style of my other games, some of which appear in Rogue Mode.Listen to the New EPThanks again for sticking around!-EliasRead full article on Community Announcements (DragonbornElias)Patch NotesOfficial
V2.1.1 Back Quick-Fix
Full Changelog: "V2.1.1 Back Quick-Fix"Bug Fixes: - Prevented walking through Doors - Blood effects no longer pass through the floor in Bonus level 1General Tweaks & Changes: - Added freeze-frame when killing half-goonsRead full article on Community Announcements (DragonbornElias)Patch NotesOfficial
v2.1 - Back Update
Greetings y'all!I've been hard at work on Bane Murrain: Episode Two, which is nearing it's final stages of development before release so keep an eye out for that!Anyway, I'd had a few fixes and bits lying around in my files, so I thought I'd drop them now in case I never added to them. Have fun!Full Changelog: "V2.1 - Back"New Shit: - Magnum & Wacker Goon Enemies now show their backs when facing away from the player - New Positive Rogue Perk: Friendly Fire (Suggested by evin52707) - New Positive Rogue Perk: Small Saws - New Negative Rogue Perk: Hard DoorsBug Fixes: - \ Fixed FPS mode not scaling for larger screen sizes - Doors have slightly better bullet collision nowGeneral Tweaks & Changes: - \ Gibbing sound now plays when you die in FPS mode - Drastically sped-up intro text crawls for easier reading - Increased coin drop chance from killing enemies - Changed slash recharge sound to stand out more - You can no longer get the same map twice in a row in Rogue ModePolish & Small Details: - Lowered resolution of enemy textures for smoother performanceJoin the Discord to make suggestions and I'll add them to the considering list!Read full article on Community Announcements (DragonbornElias)
