Doom 2D - Knee Deep in the Dead is a fan-based 2D side-scrolling clone of the original Doom. The current version, however, only has 1 episode and no multiplayer options. You can also not save or load the game.
To keep the real Doom experience, there is a lighting engine built-in to the game, to give it that old, not-being-able-to-see-everything look & feel.
Visual styles and monsters
All creatures from the original Doom appear in Doom 2D, as Doom 2D utilizes the monster sprites (and others, such as object sprites) ripped from the original Doom. The difference, of course, is that in Doom 2D the creatures are mostly seen from the side (as opposed to the front, as it is in Doom) due to the different perspective. Most of the game's foreground and background elements were also extracted from Doom, as were the sound effects.
The game runs smoothly on all windows versions (98 and up) and even works on Wine on Linux and Wine on Mac. The basic bugs in the pause-menu still occur on all systems.
- E1M8: Phobos Anomaly is not in a star-shape, but it has Pink monsters with barrels surrounding them, and the Baron Brothers.