Yesterday I was reading on http://www.insertcredit.com/news/062003.html and there I found it. A game I had played before and wanted to play again. I remembered it because after a while it's real trippy. The patters and colors are sometimes so crazy your eyesight is having trouble keeping up. Maybe not the shooter you would spend hours in but a few minutes is enough.
Now, I'm wondering if anyone know of more games like this one ?
And here it is. Best part, it's available for many platforms.
http://www.spheresofchaos.com/p/download.php