Bit of an unshock, but Cryptic's excellent Champions Online has gone straight in at the top of this week's Steam charts, seconded only by the Aion pre-order. MMOs, eh?

The PC version of Street Fighter IV's in there at number three, thanks to a 50 percent weekend discount.

Data below for the week ending September 6.

  1. Champions Online
  2. Aion (pre-order)
  3. Street Fighter IV
  4. Left 4 Dead
  5. Counter-Strike: Source
  6. THQ Collector Pack
  7. Section 8
  8. Team Fortress 2
  9. Killing Floor
  10. The Orange Box