GAMES that would probably run well when properly tweaked in the settings (for your system):
- Bayonetta (new port of older game)
- amnesia dark descent/machine for pigs
- angry birds series
- assassin's creed up to #3
- batman arkham asylum, arkham city (probably but avoid DX11/PhysX)
- bioshock remastered
- bioshock infinite
- bulletstorm (not the updated one.. but can't buy anymore cheap likely)
- burnout paradise (racing game)
- earlier Call of Duty series such as COD4 Modern Warfare (I don't own later games like Ghosts)
- castlevania lords of shadows
- the cave
- deponia and other point/click
- Walking Dead series
- Command and Conquer 3 (and red alert 3)
- Crysis 1,2,3 (probably if tweaked)
- darksiders 1 and 2 (I'd avoid the "deathinitive" Darksiders II as it's too demanding)
- Dead Island
- most FIGHTING games
- Deus Ex GOTY (with Revision free mod in Steam)
- Deus Ex Human Revolution
- Dirt 2,3 (most racing games)
- Dishonored #1 (great game, ran well on my GTX680)
- DMC (Devil May Cry)
- DOOM
- Dragon Age Origins (ideal for higher-res monitor such as 2560x1440 though as lot of small text)
- *Dreamfall yes, but Dreamfall Chapters is a NO as it's very poorly optimized in later game.
- SKYRIM (I prefer Special Edition for smoothness, but still waiting SKSE to get SKYUI working... avoid texture mods)
- Fallout NV (use ifpsclamp=60 fix... still a great game)
- *Fallout 4 might be too demanding. Yes, you can get 40FPS or so but the game stutters like it has tourettes if you can't stabilize the frame rate (and I had problems at 60FPS or below.. had to stabilize to not drop below 61FPS for some odd reason. Yay, Bethesda!!
- GalCiv II and III
- Half Life 2, plus Ep1, Ep2
- hard reset
- kingdoms of amalur reckoning (fun fighting, but I'll never finish the game)
- LEGO games (most are okay, though HP5-8 is very demanding)
- mark of the ninja
- max payne 1,2 (and maybe 3)... note there are widescreen and audio fixes for 1,2 (pcgamingwiki). older games may still be worth it if you get cheap
- metal gear revengeance
- metro 2033/LL redux (probably, but avoid high sampling... above 0.5x I believe)
- Shadows of Mordor (AWESOME GAME and runs great)
- path of exile (online)
- portal 1,2
- psychonauts (with the HUD fix)
- resident evil 5 (a bit dated but still fun)
- Saint Row 3,4 (probably)
- Sam & Max series (I think the widescreen and launch issues went away...)
- shadowrun dragonfall director's cut
- shovel knight
- CIV5 (best with high-res monitor, same as shadowrun and most top-down, "god" games)
- Diablo 3
- SC2 (will see drops due to CPU in battles but still playable)
- Southpark the stick of truth
- stardew valley (bought my GTX1080 then played that for two weeks... sigh)
- super meatboy
- tales of monkey island
- titan quest anniversary
- Vampire the masquerade bloodlines (with 9.6Final mod)
- Dawn of War II Chaos Rising, Retribution..
- the Witcher enhance
- the Witcher 2 and 3?? (probably if tweaked well)
- XCOM2
- Gears of War 4 ?? (probably)
- MASS EFFECT 1-4 (probably)