Best bits: Other than the Madden games, gridiron is a neglected goldmine of gameplay mechanics. I like the focus on the cumulative runs, making each round of gameplay add up, and the variable difficulty settings, helping players get a better feel for the control scheme.
Ideas: Feedback on when players are doing things right or wrong can help them improve at the game. It isn't clear sometimes when a down is caused by a rear collision or a time limit. Maybe an indicator for out-of-view enemies or increasing the field of view could help with this.
Thanks for submitting the game to the jam!