"Looks cool, but how does that work with the airflow? doesnt the whole thing overheat after a nice weekend of LAN-gaming?"

No, we don't think so. In it there are 2 fans (1 1200mm and 1 80 mm) and an airchannel for a good airflow (built out of lego).
But the hardware is pretty old (2800 MHz Sempron) so it is only used for playing music and such stuff.

As for the warranty : It is out of warranty (8 years old) but we are pretty sure that if it was a new one it would still apply because each part had a single warranty (we did not buy a system, we rather bought the single components and put them together )

"but i didn't have enough bricks of a single color"

Yeah we had the problem with the colour too.
First we started to build everything out of black bricks but then we ran out of them.
We looked for prices at the internet and they were pretty high for sorted bricks. So we just kept building and airbrushed it afterwards.

The only original color on this pc is the red line going round.

Thanks for your replies