New PC, new games

Toki tori

Really depends on the types of genres you like. Just because someone likes Bioshock or Skyrim or Dota 2 doesn't mean you will.

Pong :D

Specs?

Try Metro 2033 and tell us what you got?

Dungeons of Dredmor, GTA 4, Skyrim, Portal 1+2, Bioshock 1+2+Infinit, Pokemon Series, SNES/N64 games, Dark Souls, Oddworld, Team Fortress2, Dont Starve, many many more.

GTA 4

Morrowind [1] ; [2] :p

Dota 2

metro last light and Far Cry 3

McPixel, not sure if you can max out the settings though but pretty close xD

Mario? :D

740M :/

Anyhow try the obvious ones (I'm not gonna check which games you have though :P): Infinite, Tomb Raider, Skyrim, BF3, Far Cry 3, Dishonored, Metro Last Light..

Some games will run terrible (well maybe it doesn't matter for you but I hate it when FPS games don't run at 60 fps and when I have to ues 'medium' settings) :p