Use arrow keys or WASD to move. This is just something I discovered when creating a game and I thought it looked kind of cool, so I decided to share it on my test. This is used by the 'move () steps' block. The red balls are always moving closer to the white circle, but the speed of the red balls increase all the time so when they reach the white ball, they go past it then go back, but go past again and it continuously repeats - this causes the flicker effect. The speed gets faster, so they move further away every time they move. It's rather fun to mess about with! :) (If you look inside, the code is pretty simple.)
