A cool little game by Japanese designer Yoot Saito was a big hit on the Macintosh but received only lukewarm response from the PC crowd. Although one can find many faults with the game's underlying mechanics, gameplay is fast, fun, and humorous. Zone a tower and increase its population to raise your score and gain access for more room types. The narrow focus limits the variety of additions you can build for your tower, but there is always enough havoc you must keep under control (e.g. elevator congestion and cockroaches in suites) that it hardly seems to matter. Also check out Yoot Saito's Yoot Tower, the excellent sequel to this gem.