Review by Colin Phipps

ALLROY is a complete replacement for Knee-Deep in the Dead, in the same style as the original. The levels are all in the same style, all being based on three types of feature:

• Large mazes with wide corridors. These come in a variety of styles (light, dark, blinking) and sizes (large, huge, and taking-up-almost-the-entire-level). Imps, shotgun men and demons are scattered throughout these, though rarely more than one in each section of corridor. The mazes are usually topologically simple (few interconnections, just a few long winding passages).
• Lots of isolated rooms, each containing a teleport to the next such room. The rooms themselves are usually plain, with little decoration, each looking like the usual beginner's room in DEU (a single sector in a strange irregular shape). Each has an array of imps, shotgun men, demons and cacodemons.
• Sensible rooms. There are a few of these more interesting rooms that relieve the monotony of poor areas. If the author deleted the rest, and combined these few good rooms from the episode into a single level, it would be reasonable.

There are lots of texture misalignments, some tutti fruiti, and some rooms seem to have deliberate texture mismatching. There was some major HOM at one level.

There is plenty of ammo (the start room contains weapons 2-6). The opposition are poorly placed, and rarely cause a problem. But health is very tight, and with few secrets you can't afford to become careless. There are cyberdemons at several of the levels. These are usually in large areas, with invulnerabilities provided, except at E1M5, where it is in an awkwardly small room with just a few obstacles to help. But with tons of cells available this isn't too bad. There are quite a few traps.

New music is included, different for each level of the episode. Also, some of the credits/help screens, and the title of the Doom menu are replaced to give the episode name, and the authors.