Interesting concept.Only two players can play the game at the moment ? You know days back, flappy bird bitcoin version got banned from PlayStore as its against their terms to host any apps or games which deal with real money or winnings.I don't bother the success of the game but its timeframe to exists on the app store before its banned.Did you ever think about that ?

Interesting game but i just want to ask if its already release to test this app right now.. Honestly its a little bit confused to me how to play the game.. the puzzle looks the game in windows 7 purble place that every card has a random image which is you should choose the 2 the same image..The more you faster the more you can get a score..

People say the total will be 21000000 BTC.

... however:

The 1st 210000 blocks each allow creating 50 BTC.
The 2nd 210000 blocks each allow creating 25 BTC.
The 3rd 210000 blocks each allow creating 12.5 BTC.
...

The 10th 210000 blocks each allow creating 0.09765625 BTC.
The 11th 210000 blocks each allow creating 0.04882812 BTC, and not 0.048828125 BTC, because only 8 decimals of precision are supported.
...

The 33rd 210000 blocks each allow creating 0.00000001 BTC.
After that, the reward is 0.

If you sum all these numbers together, you get 20999999.9769 BTC.

... however, either due to an oversight or intentionally, the coins created in the genesis block cannot be spent.

This leaves us with 20999949.9769 BTC.

... however, due to an early problem in Bitcoin, fixed by BIP30, it was possible to create a coinbase transaction identical to a previous coinbase. This caused the coins created by that older coinbase to be irreversibly "overwritten". This happened in block 91842 (overwriting the coinbase of block 91812) and 91880 (overwriting the coinbase of block 91722). Each time, 50 BTC was lost.

This leaves us with 20999849.9769 BTC.

... however, the protocol rules allow creating up to the amounts listed above. Due to various bugs and miners experimenting with code, some blocks claim less than allowed. Those coins can never be recovered.

Block 124724 tried to intentionally claim 0.00000001 BTC less than allowed, but accidentally also failed to claim the fees, losing 0.01000001 BTC.
Between block 162705 and block 169899, 193 blocks claimed less than allowed due to a bug, resulting in a total loss of 9.66184623 BTC.
Between block 180324 and block 249185, another 836 blocks claimed less than allowed, resulting in a total loss of 0.52584193 BTC.
This leaves us with 20999839.77921183 BTC.

... however, since recently there is a concept of provably unspendable coins. Coins can be sent to an "address" which provably burns them (using OP_RETURN). Bitcoin Core tracks these and removes them from its database, so they are easily accounted for. At least 0.03616475 BTC were burned this way.

This leaves us with 20999839.74304708 BTC (taking everything up to block 368719 into account)

... However, various wallets have been lost or stolen, transactions have been sent to the wrong address, people forgot they owned bitcoin. The totals of this may well be millions. People have tried to tally known losses up here.

Its a interesting idea be it with limited potential due to the bitcoin aspect but intriguing idea.

Would worry that some one would create a bot to manipulate the game in their favor or exploit the site.
If you could get that figured out it has some aspects that could be brought into a bigger bubble like a actual app standing alone from bitcoin.
Meaning you could have a connection to bitcoin but also allow other currencies to earn more potential.

Have you considered sudoku like puzzles,that would be very interesting.

Some of the worst advice I've heard.
1) it's indeed improbable that someone can compute the private key from a public key
2) it's entirely probably that you will be targeted by criminal elements if they know you have a large stash
 2a) The cost of spamming you trying to get some malicious code on your system is minor.
 2b) The cost of social engineering you is pretty minor.
 2c) If you're entirely oblivious about privacy the cost of showing up at your place with a tire iron and beating the crap out of you until you open you stash is minor.

Depending on your environment the risk will vary. In Switzerland it may be alright to flaunt your stash. In Syria I would suggest being a bit more careful. As stated before; if you wouldn't flaunt the stack of gold bars you keep at your place then you probably shouldn't flaunt your bitcoin stash either.

As an added note; Anti-virus increases attack surface. Good luck with your free anti-virus applications.

Control over his guesstimated quantity of coins is an element worth paying attention to. As for everything else, considerably less so.

In a general way, they might want to copyright bitcoin. Which makes me think this could be at a HIGHER level that people are taking it.

The MIT license is just a license which allows anyone to copy whatever work without the need to reference the original work or credit the original authors. It is restrictionless, and it does not mean that MIT has any control over the code. Not only does Gavin work at MIT DCI, but so do Wladimir, Jonas Schnelli, and a few other guys working on Bitcoin Core RIGHT NOW (I could only think of those two off of the top of my head).

Gavin's commit access has also been revoked due to concerns that he may have been hacked.

Wait...you know where bitcoin development funds come from?