Hexen: Beyond Heretic

Hexen uses a modified version of the Doom engine, which allows (like in Heretic) up and down views, network play with up to 4 players and the choice of three character classes. It also popularised the "hub system" of level progression in the genre of first-person shooter games and featured some architectural elements that could move horizontally or rotate.

Unlike previous games, which had relied purely on MIDI for music, Hexen is also able to play tracks from audio CDs. The game's own CD contained soundtrack in audio format that was exactly the same as the game's MIDI soundtrack but played through a high quality sound module.

Hexen is compatible with many Doom source ports; Hexen's features are also compatible with Doom WADs made for source ports regardless of what game they are being played on.