Serious Sam developer Croteam has released the source code for the Serious Engine, the backbone of both Serious Sam Classic: The First Encounter and The Second Encounter.
Usually when fans make mods or remakes of games, they have to be distributed for free to avoid the obvious copyright laws. That's not the case with Serious Sam Classics: Revolution, a fan-made project that's officially been sanctioned by series developer Croteam and is being distributed by Hotline Miami publisher Devolver Digital.
Croteam is offering its supervision of the project, while the fans at Alligator Pit have created an anthology comprised of Serious Sam Classic: The First Encounter (2001) and The Second Encounter (2002) with updated tech and new content like added campaign levels, weapons, game modes and multiplayer maps.
Serious Sam Classics: Revolution is now available on Steam Early Access where it will usually cost £7.99. However, it will be half off during its first week on sale, while those who own the original games will be able to download this fan-made remake/anthology for free.