Canadian-based game publisher Meridian4 has had a long relationship with Valve's Steam download service. This week Steam celebrates Meridian4's fifth anniversary with a special week-long sale. In short all of the games from the publisher have had their prices cut to 50 percent their normal value.

That means huge savings for titles like the two Shadowgrounds sci-fi shooters from Frozenbyte, the two Pacific Storm WWII action titles from Buka and the sci-fi first person shooter Alpha Prime from Black Element Software. You can also get all 13 games in the Meridian4 Complete Pack for just $24.99 via Steam. The sale ends on July 6.