It seems like the prestige upgrade is flat? Like getting to the core and getting the 5 power upgrade is just 5 more power when that only takes like 3 minutes to get, same with the x3 coin multiplier, it only boosts you for lets say 2 minutes, I liked the game but the such small prestige boosts do not seems worth it. Also if you could have another window at the shop to view them it would be nice.