Thanks for the feedback!
I'll whip up a graphic for the page with a stick shift layout. Initially I wanted to add a tutorial to the game but was pressed on time.
There is a difficulty curve - memory! Races 1 and 2 are both 4 shifts with the second race being twice as long as the first one - this is done to match the song lengths. Races 3 and 4 follow the same pattern but with 5 shifts and race 5 is "the final boss" with 6 shifts.
If you feel like just checking out the graphics you can slap `var global_battle_index = <battle number>` inside your browser console. Numbers 0-4