Utterly Mad

Zomband sounds familar. I think. There was some kinda rather simple little zombie-themed roguelike named after an archetypical roguelike, bt not really following the control/gameplay conventions of its namesake. It had a clear endgame of sorts, in that you had a few fixes areas with random spawns, maybe random layouts, and a few different endings based on whether you escaped the city or went after other endgame locations.