Low End Pc Games

Diablo 1 HD aka Belzebub
Planet Centauri maybe? It's a LOTlighter than Terraria, it's REALLY well optimized. You'd love it
Romhacks in general if you like modded games
Punch Club

Duo's family released 8 years ago. And chipset awesome

Outcast 1.1
Deus Ex Game of the Year (2000)
Urban Chaos
Grand Theft Auto III
Phantasmagoria 1 & 2
Wizardry 6, 7, and 8
Mark of the Ninja
Dungeon Siege 1 and 2
Postal 2
Fallout 1, 2, and Tactics.
System Shock I and II
Baldur's Gate: Enhanced Edition (w/Siege of Dragonspear expansion) + Baldur's Gate 2
King of Fighters trilogy (XIII, '98, and '02)
Blazblue: Calamity Trigger, and Continuum Shift Extend.

If you want to upgrade your PC for cheap, buy a GPU. You could get one that fits your CPU without bottlenecks for like 20€. Now of course, the better would be to change everything ^^

As for games, I suggest you definitely Red Faction 1 ( maybe 2 too, but it's worse game of the two :/ ) or F.E.A.R. ( not sure if this one would run, cause I believe you actually need a 128mb GPU, but your CPU is certainly good enough for it.)

adding u on steam

If you can find it, Freelancer. :3

I have a bad PC too, add me and we can play games that don't demand a lot xD.

i'd recommend Castle Crashers, Battleblock, any of those 2D games that are good and provide a fun experience.

Can you upgrade your GPU? If you use this kind of hardware I wouldn't suggest GTX1080, but I had similar processor (intel E7300) with Radeon HD 5670 (about 50$ new, 20$ used in my country) And with 2 GB Ram there were a lot of semi-modern games which could run at 30+ fps on low or even medium details. (Batman: Arkham Asylum and City, all three Mass Effects, all three Borderlands, Civilization V)

If you don't have 20$ for hardware, than I would recommend to stick with real classics. Like Sierra adventure games (Police Quest, Space Quest, Quest for Glorry and Leasure Suit Larry series), Portal, Portal 2, Half-Life series, Superfrog (original, stay away from the remake), Final Fantasy (all with numbers below XIII should work)

Also all emulators of first five console generations (up to PS1 era, PS2 emulation won't be anywhere near playable) will work fine on your hardware. Also Nintendo handhelds up to DS can be emulated at full speed with your hardware.

The way the Unity is rendering image causes it to use to suck on anything below 100 GFLOPS. Your GPU is probably less than 50 GFLOPS. And it takes effort to optimise any game. If it is made by only few people than probably no one ever thought about any GPU optimisations. Unity can look good and be well optimised, but it requires a big teem. And big teams usually choose Unreal or CryEngine. So most Unity games need something like 150-300 GFLOPs GPU, but if team were importing a lot of effects from Asset Store than game can jump into TFLOPS range, while still looking rather bad. It is easy to run for modern mid range GPU, but modern low-ends can be overwhelmed by this kind of game. Stay away from them.

Captain Claw, Lego Racers, Gothic, Gothic 2 + Night of the Raven, Rayman 2, Rayman 3, TES III Morrowind + Tribunal + Bloodmoon, Knights and Merchants Remake, NFSU, NFSU2, BloodRayne 1 & 2, Deus Ex...

Mount and blade warband

Abandonia

hello my core 2 duo brother