The instructions are in the game, but I'll also put them here. Use the arrow keys to turn the green circle and point towards the correct answer. The game ends when your score gets to 10 or -10. The better your score is, the faster the answers move, and the worse your score, the slower the answers move.
I remixed this with my other account, @tedwilliams, at https://scratch.mit.edu/projects/165234246/. This version has a high score, which I couldn't add because I am still a "New Scratcher" on this account. The game bases whether the answer is correct or not on what the correct answer is touching, so if you point away from both of them, you lose points. Sometimes, questions may appear twice in a row. The chances of this are 1 in 36 (1 in 216 if a question appears three times in a row, and 1 in 1296 if a question appears four times in a row. If it appears five times in a row, then something is probably wrong with the game. 1 in 7776).