This week, starting on Father's Day, I discovered a veritable trifecta of great and mostly free games. First is the momentous Tilt to Live 2: Redonkulous ($2.99 now, but was free), which is so awesome, it should be an iTunes Gaming Essentials! Next up is Semi-Automatic (free), a kookie retro time-stress zapper. Tap, slap, and spin to stay ahead of a pixelly robot attack. Last but not least is Pure Pinball ($1.99), which brings realistic pinball action to your idevice. Read on for the low down.