This is a fun game, but I think instant drop off should be enabled by default. This isn't a mobile idle game; just sitting there and staring at the screen for so long with nothing to do is not a very good mechanic and quite boring. The fact that it takes 2 entire upgrade points also makes it useless because it's always faster to just get the speed or area upgrades instead. In general though, I think making the player just stare at the screen with nothing to do should never be enabled in any game (unless you're supposed to, like an idle game).