I really like the rogue like aspect with Simon says (: I really like the shop mechanic! You mentioned somewhere in the comments that you would want more fun upgrades and I agree. Maybe if you had the option to alter the board while playing, or have an upgrade to colour a tile, or maybe coins spawn on tiles. I think the upgrade like the 50/50 are really cool, gives the game a bit more activity. But for the time you had this is incredible work!