Firefly has announced that Stronghold HD and Stronghold Crusader HD are both now available for purchase from Steam. Gamers who purchase before the 28th October 2013 will get it for 30% off. Those who already own The Stronghold Collection can get it free.
Stronghold HD and Stronghold Crusader HD, which were originally released in 2001 and 2002, are remastered updates of the original games, supporting resolutions up to 2560x1600.
Check out the trailer for each remastered game in the videos below.