How can i play nvidea games on intel graphic card

nVidia does not make games. They make graphic cards that allows you to play games.

Intel graphic cores are weak compared desktop video cards. Especially if it is the GMA 4500 or previous cores. The Intel HD 2000 and Intel HD 3000 graphic cores are part of the current Sandy Bridge CPU. The Intel HD 3000 is the better one since it is basically equal to a desktop Radeon HD 5450 card, but it only supports DirectX 10.

If you want to play games then set graphics and resolution to the lowest level and maybe (depending on how old the Intel graphics core is) you might be able to play games.