Endless Mode
An endless mode should be added to the game, meaning the game won't end at 80,000 meters but will go on forever, and a leaderboard could be added specifically for this, for example, a leaderboard for the person who travels the most meters. However, the number of boss areas should be increased, for example, more places like the castle, Tesla Lab, Sterling, Fort Construction, etc. A place like a bandit prison could be added. Also, the zombies should be tougher, normal zombies should be stronger than the zombies in normal mode, etc.