2^n

How to play:

• Use your arrow keys to move the blocks. 
• Blocks with the same score merge into one when they touch. 
• The board gets bigger when a target block score is achieved. 
• There are 10 targets in total.

Endgame condition:

• You win when the 10th target is achieved.
• You lose when the board fills up before achieving a target.

Good luck!

P.S: The 10th target is 2^50, which is about 1,125,899,906,842,624. Good luck with that information!

P.S.S:  If it takes 1 second to merge any blocks starting with 2, it would only take about 17,838,807.6 years and a cosmic amount of luck to beat the game. Again, good luck with that information!