Cheats, Secrets, Tips & TricksGain Ground - Cheats, Secrets, Tips & TricksCheat Mode Hold Up + 1 + 2 and power on the Master System. A screen with extra options will appear. Share on FacebookShare on TwitterShare on LinkedinShare on Reddit Do you know any additional cheats for this game? Is there an error listed above? Let us know about it and we’ll update the list.