Reclaimed is a multiplayer sandbox capture the flag game, using a wooden log instead of a flag. The goal is to get the log from the center to either capture point on opposite sides.
Not only have I added seeds, so you can generate the same world numerous times/share the world generation with your friends. I've also added textboxes, allowing you to type in multiplayer chat/ip addresses/usernames/world names and tons of other stuff I can't remember.