MORTALITY DECOMP. KILLERS

MORTALITY DECOMP. KILLERS

Released Apr 2025

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.

80% positive · 111 reviews
Not yet
Released, but still in active development
Medium confidence
Active Development
Not yet
Released, but still in active development
Medium confidence
Active Development

Where to get it

Free on Steam

Evaluation

MORTALITY DECOMP. KILLERS launched as a free-to-play game on April 25, 2025 and has received consistent, substantial post-launch support from solo developer Elias (CUPPAKILL). The game received its first major paid expansion, "Shadow of Abaddon," on October 10, 2025, adding a full second campaign with a new playable character and mechanics. A large v2.0 update followed on December 18, 2025, introducing Arena Mode, new cosmetics, rebuilt menus, and an Easy Mode. Additional feature patches arrived on November 5, 2025 (Rogue Mode improvements), March 15, 2026 (new perks and fixes), and April 25, 2026 (4 new Master Levels in a one-year anniversary update). This establishes a clear, sustained pattern of meaningful content additions roughly every 1–3 months since launch. The previous assessment had flagged "Bane Murrain: Episode Two" as an upcoming DLC for this game — that was a misread. Bane Murrain is actually a separate game in the developer's connected universe, not a DLC for MORTALITY DECOMP. KILLERS. The most recent news post, from August 5, 2026, announces REINCARNAGE — a new standalone game set to launch September 1, 2026, at which point the entire base game of MORTALITY DECOMP. KILLERS will become permanently free. The developer has not announced any new content specifically for MORTALITY DECOMP. KILLERS beyond what has already shipped, but given the sustained update cadence (with the most recent content addition as recently as April 25, 2026), the game appears to remain in active development. The developer has also noted a habit of dropping updates to this game "every now and then" alongside work on other projects, which aligns with the observed pattern.
Evidence
One-year anniversary post: developer added 4 new Master Levels and new music. States they have been occupied with Bane Murrain: Episode Two (a separate game) but continues to add content to MORTALITY DECOMP. KILLERS.
news post · Apr 25, 2026 source development ongoing
high
v2.0 major update adds Arena Mode, unlockable lore logs, new Clive outfit, rebuilt menus, Easy Mode, and First Person Shooter mode for DLC owners.
news post · Dec 18, 2025 source content shipped
high

Content

3 of 3 released · no outstanding content

Media

Details

Developer
Publisher
CUPPAKILL
Achievements
38
Platform
Windows
Controller
full support
Steam Deck
Not rated
Players
Single-player

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.

Last evaluated Aug 19, 2026
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