Callisto
Always innovative & clever, Map Key 'talks' to you via author. Twists & turns, KOTH upper level (maybe, if you try, it's pretty open), tag on lower levels with waterways, teleporters, switches for . . . . fun. Mr. Smelick is an excellent map maker & takes pride in precise details while providing fun for solo players as well. Get this one.
Levels in map "Callisto":
Callisto