First of bsnl has announced that data transferred while playing won't get counted in normal usage ie. no matter what plan you have, you can play games all the time.

Bsnl has introduced two plans.. one is Rs. 100 a month and second is Rs. 200 a month.
Rs. 100 a month is having few games as compared to Rs. 200 per month.
Here is the list of games for Rs. 200
bsnl.indiagames.com/premium/main/titlesList.jsp?Category=All

Few games are old like Tomb Raider III ,  thats real old. Anyways, Rs. 200 is not too much as they promise to add few new games each month. Moreover they are giving 15 days trial.