Serious Sam HD

Serious Sam HD: The First Encounter, the third Serious Sam game was announced by Croteam and printed in many gaming news articles such as EuroGamer, and on June 25, 2009, it was officially announced that the third title in the series will be Serious Sam HD: The First Encounter. It was released on 24 November 2009 for PC through Steam, the XBLA release (published by Majesco Entertainment) has been delayed until January 13, 2010. The game is a remake of Serious Sam: The First Encounter with improved textures and character models. It retails for 800 Microsoft Points or US$10 ($15 for the PC version) and supports 16-player online co-op (4-player in the XBLA version). This remake features Achievements. Deathmatch and dedicated server support are currently not implemented, but will be in upcoming patches.

Serious Sam HD: The Second Encounter
On November 30, 2009, Croteam and the publisher Devolver Digital announced that Serious Sam: The Second Encounter will be remade using Serious Engine 3, and it will be released in early 2010 for PC and current-gen consoles. A new game mode, titled "Co-op Tournament" will be introduced in this remake. They also announced that the new Co-op Tournament mode will be used for competitions at the Expo 2010 Shanghai.