Enter the Gungeon is quite possibly one of the most beautiful tributes to video games I've ever had the pleasure to play. It's a beautiful blend of bullet hell and roguelike which works in a way I could've never imagined, and the insane pool of guns and weapons includes references to quite possibly every video game that has ever existed. And before you ask, YES: that does include Galaga (as if the whole game wasn't already a reference to the king 😉).