Bukkit

Saving players location and gamemode in a file, when entering a game. When leaving server while in a game, or leaving a game, the player will be spawned at the location in the file, and the player entry in the file will be deleted.

Ability to add a button/buttons to a game, and when you press it, you join the game + the ability to disable /dc join <game>

Configurable number of max players in a game!

Ability to save chatting - Both ingame, and outside