5 stars: I've completed all the pools is there gonna be more
3 stars: Limited space for the cash pile so if you put too much trash you lose the money over the cap and you won't have enough money to buy the upgrades. There's no indication that the trash in the pond will repopulate so if you buy the wrong upgrades you are straight out of luck. Not worth the download time right now. Edit: Good news trash does repopulate but very slowly
3 stars: Once you create and upgrade the four pools, there's nothing to do but run around in circles collecting money. Download, enjoy, delete in an afternoon.
2 stars: They seemed to have update since the last few comments but now, all I can do is collect cash. I've upgraded everything and cleaned all the pools. There doesn't seem to be a next stage or anything to move on to. I essentially beat this game in 20 mins.
2 stars: Fun game when you have money. As soon as you run out of money and can't reach anything else, you can't make any money. No ads to get money or can't buy money. Once you do this you obviously can't upgrade the vacuum to reach anything so might as well just uninstall the game.
...