GBA Championship Basketball - Two-On-Two (1987)(Gamestar - Activision) ROM Download for Apple II GS (A2GS). GBA Championship Basketball - Two-On-Two (1987)(Gamestar - Activision) game is available to play online and download only on Roms Games. GBA Championship Basketball - Two-On-Two (1987)(Gamestar - Activision) 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.