Round-robin tournament

•  Each teams play a game with every other teams once or more than twice.
• Max 20 teams
• Max 5 repeats
• Share game table, rank by twitter, email...etc

Bracket tournament

• Knockout tournament. 
• Select shuffle teams or don't do it.
• Max 20 teams
• Share draw by twitter, email...etc

Rating tournament

• Order by rate
• If you won, rate will rise. If you lost, rate will drop.
• Support handicaps value
• Max 20 teams
• Share standings by twitter, email...etc