Yesterday I went to the arcade with my wife, and they had a game whereby you have to stack up a series of blocks. These blocks will move horizontally across the screen. The blocks need to be placed on a stack. As the stack gets higher, the blocks need to be placed on a narrower surface, and the speed of the blocks moving horizontally will increase. The objective of the game was to reach to the top by lining them up, with prizes awarded based on the final height of the stack; the ultimate prize in this case was a Playstation 3.
An example of this type of game can be found on Wikipedia here.
Like most arcade games, this game requires money to play. Many of the prizes are worth more than this amount, but failure to stack to a certain height results in winning nothing. While the game itself relies on skill to play and win, the fact that you may or may not ever receive a prize still made it feel like a game of chance.
After playing a few rounds, I went back. I was worried that even if I won the grand prize, would it be considered haram?