DEMONIC PARK

This reads as an early example of arcade-style mapping.

Areas are defined largely by color combinations, with no real overarching theme to the map: there are silver techbase rooms, brick-like Earth rooms, red hellish rooms, without much in the way of detailing or setting-building -- all centralized around a square hub room with key doors, which repopulates with monsters each time you find a key. It's on the simpler side visually, but still a very clear step above "monotextured square rooms"-type design, with some solid architecture, shapes, and texture combos here and there, and even a clever crushing UFO-like "ring" at one point. 

The gameplay concepts are very straightforward, with one exception being a room that has you platforming over damaging floor while closets of lost souls and cacodemons open up. Instead, the bulk of the fighting is more often dished out as blocks of monsters often revealed in closets -- blocks at a density far below what you'd consider slaughter. Some of the potential fun involves herding monsters towards barrels; once I waited several seconds for chaingunners to walk halfway across the room, right next to a clump of barrels I could blow them all up with. The ending fight is designed for you to pour rockets into two static cybs while circling, and I skipped that one. 

Completed in a bit under 10 minutes. 

Abstract map that unfolds in 4 different areas, 3 keys, linear progression, later he made contributions to Memento Mori 1 and 2 also.