Half-Life: Decay is the the third expansion pack for the award-winning game, Half-Life. It was included as part of the PS2 version of Half-Life. Decay returns to the setting and timeline of the original story, albeit portraying the story from the viewpoint of a different set of protagonists: two scientists working in the Black Mesa Research Facility. Decay is a cooperative multiplayer game, designed to be played by two people working together to pass through the game's levels.

Post news Report RSS December 2023 - Current Roadmap Update

A quick overview of the actual development roadmap until the first release.

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Hey folks!

I just wanted to start by saying thanks for all the support. As you may have seen, the development of this mod has already started. I wanted to give you a few updates on the features that are currently being developed for each game mode.

I'll keep you updated on the development as soon as I can.

Meanwhile, if you want to get involved or if you have any feature requests, let me know!


Crowbar & Glock-only mode - 33%

  • Exclusive weapon classes to avoid other weapon pickup (COMPLETED)
  • Exclusive ammo classes to avoid other ammo pickup (NOT STARTED)
  • Feasibility testing - Crowbar (COMPLETED)
  • Feasibility testing - 9mm (NOT STARTED)
  • Map entity modification to make the game completable - Crowbar (NOT STARTED)
  • Map entity modification to make the game completable - 9mm (NOT STARTED)

1HP mode - 29%

  • 1hp health limit modification (COMPLETED)
  • No armor pickup and view on HUD (NOT STARTED)
  • Fall damage modification to make the game completable (NOT STARTED)
  • player first-person coat model for weapons (instead of the orange HEV) (PENDING APPROVAL)
  • modification of c0a1d to remove the HEV station (STARTED)
  • modification of HEV station during Unforeseen Consequences (NOT STARTED)
  • Feasibility testing (NOT STARTED)

Realistic mode (Current focus) - 35%

  • Bindable weapon drop mechanism (COMPLETED)
  • Mag drop mechanism - You lose your clip ammo if you recharge before empty (COMPLETED)
  • Mag drop animation (STARTED)
  • Bindable iron sight mechanism (STARTED)
  • Iron sight animation (STARTED)
  • hip fire vs iron sight precision (NOT STARTED)
  • semi-auto weapon (for shotgun, crossbow, 357, glock) (COMPLETED)
  • semi-auto and burst mode for Glock and mp5 (STARTED)
  • manual ammo reload (COMPLETED)
  • Weapon fire mechanism - Keep firing = less precise, CS-like (NOT STARTED)
  • Weapon class limit (COMPLETED)
  • Ammo weight system (NOT STARTED)
  • Ammo pick up using "E" (NOT STARTED)
  • Bindable ammo drop mechanism (NOT STARTED)
  • Damage (player & NPC) modification (NOT STARTED)
  • Slow player below X% health + breathing .wav when walking injured (NOT STARTED)
  • Bleeding mechanism - aesthetic only (NOT STARTED)
  • Auto-aim removal (STARTED)
  • Crosshair removal (NOT STARTED)
  • HUD modification - mag or item count vs. ammo count (NOT STARTED)
  • HUD modification - No health count, armor only, no weapon HUD (NOT STARTED)
  • Feasibility testing (NOT STARTED)

Permadeath - 0%

  • Add a 4th skill (NOT STARTED)
  • Remove autosave entity (NOT STARTED)
  • Remove the possibility to save (NOT STARTED)
  • Bring to main menu after death (NOT STARTED)

Half-Late Mapping - 0% - Open to collaboration

  • Build mapping roadmap (NOT STARTED)
  • Build maps (NOT STARTED)
  • Modify maps to make each game mode completable (NOT STARTED)

Screenshot 2023 12 11 at 11 49 3

357 iron sight

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