Minecraft wiki entry for Mini_games, associated text: Cavern (default): "This ancient looking underground structure is the perfect place to sneak up on your enemies!"
Cove (default): "Try to survive in the pirate's hidden camp, full with shipwrecks and caves!"
Crucible (default): "A world built deep in the Nether, with plenty of lava for your enemies to swim in!"
Lair (fantasy): "Battle in the dragon's lair."
Medusa (Greek mythology): "Don't look directly at her!"
Temple (default): "This mysterious temple is set within the deepest jungle. Watch out for enemies lurking in the tree tops!"
Atlantis (Greek mythology): "Deep beneath the ocean, a lost city lay in ruins. Atlantis awaits the battle."
Ruin (city): "Abandoned and left to ruin, there are still secrets left to be found. Battle for the remaining resources and survive this hazardous place."
Siege (fantasy): "Brave the enemy walls or defend the keep. The siege is upon us."
Castle (default): "Crown yourself in glory in the Castle's great halls."
Invasion! (city): "An alien attack has created a dangerous arena. Defend your rooftops but don't fall off!"
Shipyard (steampunk): "A port in the sky away from the storm, but this area is anything but calm."
Frontier (default): "It's high noon! Things are about to get wild in the Old West, so grab a fistful of TNT, slap on a sou'wester and prepare for an almighty dustbowl dust-up between the good, the bad, and the ugly."
Dig (default): "A snowbound excavation site lies deserted. What unspeakable things did the scientists discover beneath the ice? Find out for yourself, while battling against both the elements and each other!"
Shrunk (plastic): "Are you tiny or is everything else just really, really big? Be careful not to lose your sense of proportion as you fight your way across this over-sized bedroom and tidy up the competition."
Halloween (Halloween): "Something wicked this way comes. Full of deadly thrills and sinister shocks, it will scare you off your Minecraft blocks!"
Valley (Chinese mythology): "Discover your inner self as you battle across this ancient land of dragons! This battle map is exclusive to the Chinese Mythology Mash Up."
Festive (festive): "Get together with friends and family for some Minecraft-style tussling in this special seasonal map. The more the merrier! Guaranteed to be more fun than pretending you like the socks your uncle gave you."
Capitol (Fallout): "Clamber through the ruins of the Capitol! Who will rise from the rubble to battle their way through the wasteland?"
Libertalia (Fallout): "Battle through the troubled waters of Libertalia! Who will captain the seas in this watery graveyard of ships?"
Atomics (Fallout): "Face the perils of the General Atomics Galleria! Is Mister Handy friend or foe? Will you dodge the traps rigged to blow?"