Mock Trading for Nifty Futures.

Could some please tell me is there any website which allows users to do a virtual trading in Nifty Futures?

we have one like Moneybhai but we can only trade with stocks here not futures. It would be really helpful if someone throws light on this.

open demo a/c in GCITRADING

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use rediff money's share market game.

i am not able to use rediffs share market game. when i try to trade futures it shows no sufficient margin