Base Wars

Cyber Stadium Series: Base Wars (commonly shortened to Base Wars or BaseWars) is a futuristically-themed sports game, released for the Nintendo Entertainment System on June 1, 1991. Set in the 24th century wherein baseball team owners have grown tired of paying outrageous player salaries, they decide to replace their rosters with cyborg robots. This was the last NES game released by Ultra Games independently (although it did release several other games developed by other companies for another year afterward for both the NES and Game Boy).