I have a very low end pc. Specs:Intel Core 2 Duo E7500 Intel G41 Express Chipset. What PC game can i really play?

Beyond browser-based games, not much.

With no real graphics card your computer is extremely restricted in what games it can even physically run, let alone run well due to your old hardware.

Games with simple graphics will be OK - mainly things like Candy Crush, or FTL - but probably none of the FPS stuff - even old FPS games.

Intel Core 2 Duo E7500 Specs

Hell no buy yourself a graphics card