A game i think people should check out it Titan's attack on steam. its a indie game, kinda like a Space invaders at first until later levels because it includes upgrade different aliens , different bosses. i find it to be a great game , so if you want to check it out its on steam for $5 i think its a all around good game. If i had to rate this game i would say 8.5/10 . well if it sounds like your type of game go get it.