If i play 1 GB large games in my lenovo basic level laptop, then my laptop hardware get spoiled by overheat?

Usually it is not a big problem for the laptop, rather for you… The game will get stuck or gets slower. What happened once to me, was that the laptop was so overheated that it just turned off…

Things I would do:
- Put the laptop on a table, that the ventilation works properly. When you use it on a soft surface, the risk of too high temperatures is higher, because the ventilations holes are covered

- in the game settings, you should put lowest detail level and a smaller screen solution to not overexert the video card

You will have only problem on loading and running games. No hardware failure