Interesting idea, but I feel like the random factor is a bit too unappealing. The power-ups do not justify their cost. Unfortunately, I wasted 1 ghost, 1 double money, 1 triple money, and 1 magnet (a total cost of 165 ice coins) to get only 50 coins back :P. In these types of games, I expect to have a long-term investment strategy: if you save up your coins, you will unlock more powerful powerups, which will lead to earning more coins, which will lead to unlocking even more powerful powerups... You get the idea.
I feel like I'm colorblind lol, there are like 4 magentas, and I mess them up a lot.
Also, at least some SFX to keep my ears busy would be nice.
I really liked the slider in the shop.