Battle Bull is a strategy-based action game for Game Boy in which players control an excavation vehicle driver in a 48-level drilling tournament. The objective is to eliminate rival drivers by pushing stones, either fixed in the environment or movable. Players earn money to upgrade their vehicle's engine, purchase extra lives, and enhance their capabilities. Success depends on achieving a required kill ratio to advance through levels. Upon completing all stages, players are celebrated as the new champion in a concluding scene with a sunset and credits.
The player controls a driver of an excavation vehicle as he competes in a 48-level tournament of drilling things.
Players have to kill rival drivers only by pushing huge stones at them. Most of the other stones are a permanent part of the underground cavern; while others can be used to eliminate the opponents. Money is earned after each level for the purpose of upgrading the player's vehicle. Players can improve their engines, purchase extra lives, shovels that can dig better, and weapons to improve the odds on the playing field. A kill ratio is required to be met in order to reach the next stage. Otherwise, the player remains in the current level.
After finishing all 48 levels, the game proclaims that the `battle is over` and that the player becomes `the new champion.` The final scene in the game is where the player looks over the sunset with his girlfriend along with the closing credits.