Ginormous Collection - Pro Mountain Bike Simulator (19xx)(Alternative Software)[48-128K] ROM Download for ZX Spectrum (TAP). Ginormous Collection - Pro Mountain Bike Simulator (19xx)(Alternative Software)[48-128K] game is available to play online and download only on Roms Games. Ginormous Collection - Pro Mountain Bike Simulator (19xx)(Alternative Software)[48-128K] ROM for ZX Spectrum download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.