Laggy/non-responsive. Shows loading when summoning new towers or merging, but lags and effects play. Update. Thought I'd revisit this game. Even worse. Maybe let's me win pvp 1 out of every 15 games even though I'm out-damaging my opponents. Obviously they want you to buy something. Still buggy where it shows that you've tried merge or summon units, but it doesn't register, so you lose because you essentially can't compete. Now you can't play co-op? Dungeons?Do you even want people to play?