Decon!
Originally a Map Contest entry (eons ago! We'll get back to you Chris!). Read Me uses term: 'Procrastination proliferating hooligans' aka Bungie. Wha? Bungie/Marathon (ab)users are procrastinators? Say What? Pretty good map, kids. Spectacularly large, complex, rectangle which could support as many as 8+ players, and also (definitely!) solo play. Would seem best suited for tag. Many, many, hidey holes, vast assortment of doors, passageways, stairways, hallways, you name it. 3x available, all ammo & every stripe alien working against you. Run through would be necessary unless you're just... well, run through is recommended.
Levels in map "Decon!":
Decon!