This game is pretty fun I also agree and also disagree about the speed about the timer it is fast but I mean I guess thats the big challenge about the game. Maybe just add a Easy, Medium & Hard option. Also maybe a multiplayer like a game called "Bike Race" like compete against each other until someone messes up or a player plays the game until they mess up then that score gets sent to another player then they try to beat your score.
RanSoto about ATM Simulation