The game graphics were great and I didn't experience any lag, but I didn't like it much because it's an auto-attacking game - as always. You just need to tap cards to summon slime heroes and they will automatically attack the enemies. Enemy release coins when killed and you can extend your slime wagon to summon more. It makes me a little bored waiting for the game to end when I finally summon/place my slimes in their wagon. The characters are so cute. I think it's because they are slime.