To be honest, you can't really get a gaming laptop for under Rs. 50,000. At 50,000 budget, you can get a laptop that will play current games at Low and Medium settings for a year or two old games. For gaming, your laptop needs a powerful discrete GPU. If possible, build a desktop tower for 35,000, if you're really into gaming. You'll get much, much more performance than a laptop and you can even game on Very High Settings and Full HD.
If laptop is a must, then I'm afraid, 35,000 would fetch you a laptop with very meagre configuration and without a discrete GPU.