9.21 Upgrade — CubeGun Steam update #899488

Coop mode now uses auto battle data, enemies will follow formation Copp difficulty increase per player is reduced Limited auto battle ship amount to 20 Optimized terrain and ship destruction Ships now explode spectacularly upon death Reduced difficulty of last tutorial Reduced boomerang projectile weight Increased Maintenance Unit's target switch speed and reduced its healing speed Fixed boomerang being stuck Fixed ship list going over screen limit Fixed disconnect popup showing up Fixed some reflective textures Fixed info on minelayer Fixed unnecessary revenge option during challenge 合作敌人改自动战数据，敌人会保持阵型前进 降低合作模式增加玩家数量时的难度 自动战斗限制飞船出战数量为20艘 大幅度优化破坏地形和破坏飞船时的效率 增加飞船死亡时方块炸开效果 降低新手教学最后一波敌人的难度 降低回旋镖重量 增加维修器治疗时间间隔，减少切换目标时间间隔(克制大量小飞船策略) 回旋镖卡住敌方飞船bugfix 飞船牌排版超出屏幕bugfix 有时候提示网络断开bugfix 修正部分反光材质效果错误 地雷弱点说明修正 挑战玩家时去掉多余的复仇按钮