Great concept for an RPG. However, upgrades should not be as expensive as they are for the bike itself and the team. Also, I feel that the position you finish in, the combo you have and your score should all play a part into the amount coins and/or gems you get. It needs to give people an incentive to grind since there is A LOT of grinding. Like I said, great concept and an addictive game. Just needs some polish!