Bungie

Marathon 2: Durandal

Bungie

Classic sci-fi FPS with expanded campaign, dual weapons, and multiplayer modes. Marathon 2: Durandal on Windows.

Marathon

Bungie

First-person shooter classic from 1994 — free, open-source, and fully playable on modern Windows.

Halo 2

bungie

Halo 2: Classic first-person shooter with fast-paced combat, multiplayer modes, and intense sci-fi action.