Dark Fantasy FPS
Heretic
Raven Software's 1994 fantasy take on the Doom engine — magic weapons, flying items and a stake through every heart. Shareware episode, in your browser.
Mouse look & shoot · ←↑↓→ / WASD move · Ctrl / Click fire · Space use · Shift run · 1–7 weapons · Ctrl+F10 release mouse
First load downloads the emulator and game (~2.5 MB) and caches them. If the screen stays black, click it once and wait.