The game is buggy, unstable and you play most games against the worst AI opponents imaginable. The game is fun until level 20, then it's completely unbalanced. They need an English build of the game, not their patched together, poorly translated mess. I still get screens only in Korean. The new weekly challenges don't load properly half the time. The other missions sometimes show up, sometimes don't. They need better AI, and matches with other players based on level AND VIP level.