This is sort of like hide and seek. Players hide a flag bearer which freezes after 340 seconds. At this time players get other units to kill opponent's hidden flag bearers. The terrian offers good hiding spots.
For clearer instructions view the starting cinematic.
You can have teams if you want, but I have only tested it without teams, and the computer player is always allied with everyone, no matter how you set the teams.
OK! EVERYONE START DOWNLOADING! :D