Just got The Sky Arena finished.Beautiful i must say. There may be tweaks to it in the future.I have the lava traps for if clay soliders get stuck on the fall,or you just get bored with them. The Hill arena was finished but was lost. Sorry.

Also my friend gave me an idea to have a Gladiator pit for my little men to fight actual mobs(like Silverfish). So i have put this into consideration

Planned:

Nether Arena

Soul Arena

Maze Arena

Village Arena

Released:

Basic Arena

Sky Arena

Possible Arenas:

Mine field Arena

Lava Arena

Gladiator Pit.

Arenas in Progress:

Water Arena

Hill Arena