Motion-sensing golf game controllers that appeared 20 years before the Nintendo Wii and the 1980s handheld console that operated on solar power are just two of the gems unearthed in this article about retro gaming secrets. Davey Winder has delved into his extensive personal collection of retro hardware to unveil the first handheld console to play '3D games' from 1983, the 'the most realistic "gun" game controller ever produced' from way back in 1972, and the device that offered multiplayer computerized Scrabble almost 30 years before the iPad.