Valve originally won its dispute with Sierra, and was awarded $2,391,932 in its favor. However, Activision paid Valve only $1,967,796 last week, claiming that the missing $424k had already been doled out over the years, as pointed out by GamePolitics.

Not all that happy with Activision's appraisal of the situation, Valve sued the publisher this Tuesday. As promised, Activision is now threatening to countersue.

And in the span of time that it took you to read this, Activision Blizzard probably earned another $400,000. This one is about principle.