A good time-killer but loses its luster over time. You have to replay the same level at least 15 times to collect enough items to unlock the next location (unless I was doing something wrong, there is not any information about items outside of the game). The time it takes for opening chests increases drastically after each chest with no distinction between a level 1 chest or a level 6. Don't really have anything to do with the loot either. Having more content would make this game perfect.