To problems now: 1) Imbalance in wof (in number of ships as well as in overall level of ships), making fleets dislike battles. 2) Imbalance in great battle, sometimes three BB120 join together and own against some BB50 or SS55 on the other side. As such, a score system in matching is suggested: 1) Each fleet should have equal/ more or less the same scores. 2) The score system can be, for an instance, like the one below: DD: 1 score CL: 2 scores CA: 3 scores BB50-80: 4 scores BB90-100: 5 scores BB110-120: 6 scores ( a vetted BB120 is usually unbreakable, so more scores set here) SS55-68: 4 scores SS79-92: 5 scores CV55-68: 4 scores CV79-92: 5 scores As such, fleets in battle would have most likely similar power. For example, a ten player game with 1 cv, 1 SS, 2 BB, 2 CA, 2CL, 2DD would have about 28-34 scores. A good chemical about cooperation is expected since each level of ships have to protect each other. Although some minor edges are given to premium ship users, or users using DD50 or CA41. But I think such edges are allowed for those players and still game balance is not broken. Any further suggestions?