Takes a really long time to actually merge and/or clear things. It's a fun concept but unlike other games you can only play a few minutes at a time. While waiting for energy recharge or item timers. Of course you can pay real money and keep going but there are no options on how much energy you can buy. Every time you buy more energy the price goes up. The game/graphics itself seems like an old platform kind of thing. I forget about playing it because I can spend an hour or so on another game