Space Invaders - Play your favorite s arcade games online. FREE Video No tokens required to play these video games! Free 80s Arcade is a % free. Remember this old classic? Space Invaders is one of the most addicting games that was ever made. The idea is very simplistic. You are a space ship who must. Use your left and right arrow keys to move left and right; use your space bar to fire in the all-time classic Space Invaders.