What's the point of having a 1080p screen if you're not using it to get in some quality gaming time? Google Play is great for downloading games, but you probably already have an extensive library of games for your consoles, so use those!
Emulators are a dime a dozen, but RetroArch managed to bundle them all into one. Created by Libretro, RetroArch aims to provide users with a easy and reliable way to play their favorite retro and modern games.
The emulator supports most gaming consoles out there, with the exception of the newer generations. You can play SNES, N64, PS1, Game Boy, GBA, and... more