When you make an alliance, you need to pay 10000 points. You can break up an alliance after 1 month or pay 30000 points. You can only join 1 alliance. Some alliances can make players to pay points to join. If you join an alliance, you can lend your costumes to others(only once). And if you join alliance, you can play 'multiplayer team mode'. Alliances can chat together and leader& co-leaders can kick out. You can't use Devil and Mon-K because you bought it with your money.