NERTS! Online is a fast-paced competitive solitaire game for you and up to five of your friends, played the same way we play it at the Zachtronics office! Nerts is a competitive solitaire variant that is known by multiple other names, outlined as far back as the 1930s. with slight differences in official rules. The game is a mix of solitaire and speed where any aces found can be used by all players with the goal of clearing their target/Nerts pile first.