Depends on the type of game.
Peggle, Chuzzle, Castle Crashers, Galaxy of Pen and Paper, Goat Simulator, The Lego Games *batman, marvel, lord of the ring*, Mutant Football League, Paladins, Poi, Rebel Galaxy, River City Ransom: Underground, Super Blood Hockey, Team Fortress 2.
None are overly complicated to get into, but as you play you'll grow and create your own play style as you go.
Peggle and Chuzzle are great casual games. Hope that helps, but also what other games or types of games do ya like? Would be able to add more that you might enjoy that way.