The idea sounds interesing, and different from all those dice-games.

However I do strongly agree with greentea. Unless you offer shares, there is no real incentive to invest here.
Also the asked amount is a little high if you ask me.
Someone with decent programming-skills could build a working version of that in probably just under two weeks - the fact that you are looking for heavy funding tells me that you are probably not that "someone"?
If that should be the case you will have a tough time before you, but none the less the concept looks good and I wish you the best of luck with it.

My advice: Just do it! The chances of getting funding with not even a working prototype are pretty low.