We've been working for a while now to get the game ready for Steam and are insanely pumped to have it approved. From what we can tell Steam controls most of the digital distribution game market, so having it available there is very exciting for us.
We've polished a lot of aspects of the game along the way to get it approved including seamless quicksaving, better controller remapping, and better cinematics transitions. I've also jacked up the supported max resolution of the game to 1680x1050.
|1600x900 view of the Caterfighter in Pompeii|
The page on Steam is not up yet, but should be later this week.
Here's the Serious Sam Double D Get Games page.
And the Impulse page should be up soon as well. Should be up on IndieCity and Desura too.