That is, black background and white pixels moving towards and "past" the screen. I suspect this is a common question, but I coundn't find a thread about it using the search function so here it goes.
What I want to do is have this feature as background in a Tetris clone I'm writing so that the area around the playing field will be moving space.
This sounds a lot like something which could (should) be implemented using a particle system. Has anyone got any advice, code examples or useful links to tutorials etc?