Half‑Life: Decay: Solo Mission is a Half‑Life mod that ports all chapters of the PS2‑exclusive expansion Half‑Life: Decay into a fully playable single‑player campaign while preserving the original gameplay.
Localizations:
Localizations:
The mod is localized into 1 language
(You don’t need to download anything extra to play in these languages)
This port not only allows players to enjoy Decay without the need for a server but also updates the visual effects to better match the original Half‑Life, giving each Decay map its own unique touch while keeping the core gameplay intact.
How to install a mod Half-Life Decay: Solo Mission
Unpack the archive and move the decaysolodemo folder to the root directory of the game.
(Optional) If you want to replace the original models with HD models, place the contents of the "decaysolodemo_hd" folder into the mod folder.
Launch the game, go to the Change game menu, and select the mod.
Play!
