Freedoom: Phase 2 is a 32-level game, expanding upon Phase 1 and adding a double-barrelled shotgun and more enemy types, along with even more brutal gameplay to really test your limits.
The Freedoom project aims to produce three base-game data files (IWADs) for Doom-compatible engines. With it comes the capability to also play the wide range of mods created for Doom by a vibrant community. Freedoom: Phase 2 is fully compatible with Doom II mods.