Dungeon of Dooom
This was a tile-based game developed in Java with a GUI. The game could be set up on a server machine, and clients would then connect to the server to play the game. The idea of the game was for users to compete against each other to go around the dungeon trying to collect enough gold and then get to an exit tile before another user. Users were not allowed to go through walls or onto tiles occupied by other users, so collision detection was implemented for this.