what the upgrades do: speed- cats move faster cats- more cats=more bounces=more coins explosion chance- its the chance that when a cat hits the edge, it will cause an explosion, giving you 100 coins! epicness chance- its the chance that when an explosion happens, it'll increase your epicness by 1. epicness put though a wierd formula is how much your coins are multiplied by, but the more epicness you have the faster it depletes... (epicness also slowly makes the screen turn into a rainbow)
story: every time your pet cat hits the edge of the room, you get a coin... so you feed your cat energy drinks to speed it up. you get enough coins to adopt more cats. eventually you buy tons of upgrades and get millions of coins from your cat empire...