and i think Dawg needs to recalibrate his sarcasm meter.
Those are Source engine games, I think meph needs to lay off the meth
Actually, saying "run on <name of engine here>" is common in reviewer parlance, thank you. "Runs on source" or "runs source" is easier than saying "a source engine based game." Of course, you won't see that after an editor gets through with it - at least the editor at the site I wrote for didn't let it through.