The most interesting fact about dogecoins is that they are very young. They started in December 2013 and currently the trade amount of dogecoins is higher than all other cryptocurrencies combined. Right now 1000 dogecoins is about 1 USD. So you can buy some while they are cheap.
The author of the video claims that if anyone posts a video proof how he beats his record he will pay the score amount in dogecoins. I wonder if it's possible to reach the score of 1000 or 10000. It would be cool if the author keeps his word. But the author does not mention what game is this and where to find it...
I have made some research and the game is called VeryDoge - available here: