Doomdream is more of a description than a title. It’s an attempt by its creator, Ian MacLarty, to conjure up an “impression of [his] dreams after [he’s] been playing Doom all day.” That’s Doom, the 1993 hell-romping shooter, which mostly everyone is familiar with. If you’re not, all you need to know right now is that its levels are typified by asymmetrical labyrinths with low ceilings and forking pathways that often loop back on each other. It’s this architectural theme that Doomdream replicates, sans the spike-skinned imps, and biomechanical texturing. It’s entirely white, grey, and red: the colors patterned as…