Balance Of Power - The 1990 Edition (1989)(Mindscape)[cr][non Boot] ROM Download for Apple II GS (A2GS). Balance Of Power - The 1990 Edition (1989)(Mindscape)[cr][non Boot] game is available to play online and download only on Roms Games. Balance Of Power - The 1990 Edition (1989)(Mindscape)[cr][non Boot] ROM for Apple II GS download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.