Status
SteamPeaks
ChartsSalesUpcomingPatchesEventsCalculator
New on SteamEvery app, DLC and depot the minute Steam creates itAppsEvery app on Steam, newest change firstPackagesSubs and bundles, and what each containsDepotsDepots, manifests and install sizesTagsSteam's user tags and the games under themDevelopers & publishersCompanies and their cataloguesTechnologiesEngines, SDKs and anti-cheat found in the filesChange historyEvery PICS changelist as it lands
SignalsNineteen readings of the whole catalogueCompareAny games side by sideRecordsAll-time peaks and the days they were setReportsWeekly and monthly write-upsAlerts & newsroomWatch a game, get told when it movesSteam statusIs Steam up, right nowWeb API explorerTry the endpoints in the browser
EventsSteam's own events and the sales calendarCalculatorWhat a Steam account is worth, and its pile of shame
/
Sign in
/
SteamPeaks
The ultimate resource for Steam data.
ExploreChartsSalesSales and festsUpcomingPatchesEventsRecordsTrendingSignals
DatabaseAppsPackagesDepotsTagsDevelopersTechnologiesChange history
ToolsCalculatorCompareSearchAlertsSteam statusAPI
SiteMethodologyFAQDiscordSupportSign in via Steam
Not affiliated with Valve or Steam. Game names and artwork belong to their owners. All times UTC.
PrivacyCookiesFair useStatus
MORTALITY DECOMP. KILLERS›Events›v2.0 - Arena Mode
Major update

v2.0 - Arena Mode

MORTALITY DECOMP. KILLERS · published 9 months ago

All eventsPlayers around this dateRead on Steam

Happy holidays! Here's a big update for MORTALITY DECOMP. KILLERS for y'all.

NEW ARENA MODE has been added, for a simpler and more seamless endless mode. Move through individual rooms generated from interlocking presets and see how far you can make it.

NEW UNLOCKABLE LORE LOGS that can be earned through killing enemies and collecting coin drops, which give further details on the characters and their lives.

A NEW UNLOCKABLE CLIVE OUTFIT that you'll have to play to see... You can take his coat off now!

COMPLETELY REBUILT MENUS that now almost entirely function with mouse clicking. Plus the settings are available from the in-game pause menu too!

CAMPAIGNS NOW HAVE AN EASY MODE for anyone struggling with the difficulty of the game and just want to see the cutscenes.

AND FOR OWNERS OF SHADOW OF ABADDON (DLC), both campaigns and every game mode can now be played entirely in FIRST PERSON SHOOTER MODE!

Have fun, and let me know about any bugs through the Discord or the Cuppakill site. Thanks!

Full Changelog: "V2.0 - Arena Mode"

New Game Shit:

- [DLC] Added the 'FPS' Camera option for all game modes, for both Clive & Abaddon

- Added 'Arena Mode', an endless game-mode with seamlessly generated arena

- Added an 'Easy Mode' to the Campaign, that nerfs enemy health and speed

- Enemies now have a chance to drop MDK Coins, that can be used to buy Extras

- Unlockable Documents have been added to Extras, giving further character lore details

- Multiple menus (Extras, Main, etc) have been rebuilt for mouse compatibility

- Settings has been split into organised submenus and can now be accessed in-game from the Pause menu

- Added NEW 'Coatless' skin for Clive

New Arena & Rogue Mode Shit:

- Enemies in Endless Modes now have a chance to drop Health Pickups

- New Enemy type 'Half-Goons' can appear in Endless Modes

- Added a run statistics screen when finishing a campaign playthrough

Bug Fixes:

- Fixed enemy corpse sprites not facing the camera (finally)

- Fixed 4-Health perk in Rogue Mode not working with Abaddon (I think)

- Applied black skybox to out-of-bounds in 'Dragonbreath'

- Fixed Acid Water trigger being treated like a bullet and deleted post-collision

- Put a counteracting script in place to prevent Slash collider remaining on permanently

General Tweaks & Changes:

- Doors now only need to be shot once to break

- Added the Version Number of the build to the corner of the main menu

- Logo no longer changes depending on DLC, but game edition is displayed beside version num

- Campaign mode now has it's own setup menu similarly to the two endless modes

- The main menu background no longer flickers, and shuffles between variants upon opening

- Returning to menu from in-game skips the initial logo reveal segment

- Main Menu now features a banner for Cuppakill news updates on all titles

- Sometimes Magnum Goons' entire top half explode when they die to bullets now

- Changed direction of gib and blood particle effects to splash upwards

- Blood particles have had a huge vibrancy boost to better match the game's colours

- Added a randomized 0-0.1 second timer for enemies dying to explosions

- [DLC] Moved & expanded timer collider in 'Takeover Two'

Polish & Small Details:

- Menus with mouse-interactivity have a custom mouse cursor

- Added a small cursor animation when killing an enemy

- Added the screen-border zoom-lines from 'Incarnage' when using dash moves

- Added light version of subtle dot-matrix effect around screen from 'Bane Murrain'

'Rogue Mode' Perk Changes:

- Removed 'Chain Reaction' Perk when playing as Abaddon, since there was no effect

- 'Costly Slash' Negative Perk now correctly affects Abaddon

- Lowered volume of additional enemy gunshots for 'Rapid Fire' perk

- Added 'Wolf Shadow' Negative Perk

- Added new 'Half-Goons' enemy as a Negative Perk

More from MORTALITY DECOMP. KILLERS

Other announcements

All events
Esports31 Aug 2026NEW FREE FPS OUT NOWMY LATEST GAME IS AVAILABLE NOW FOR FREE WHAT'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…Esports5 Aug 2026REINCARNAGE IS COMINGAnnihilate 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 healt…In-game event25 Apr 2026v2.2 - 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:…