I always find myself playing these a lot for some reason.
Minecade (Super Craft Brothers, Villager Defense, The Walls, Minecraft Trouble in Terrorist Town)
The Hive (Survival Games, Trouble in Mineville, The Herobrine, Hide and Seek, Splegg, One in the Chamber)
The Shotbow Network (Shotbow Games, Death by Void, HardCore Factions, Ghostcraft, Last Man Standing, Wasted, MineZ, Smash!)
Snapcraft (Earth Game, Hunger Games, Survival, Factions, War Game)
What are your favourite Minecraft minigames?