Update 1.08 was a significant milestone that introduced several new features and fixes:
: Included a new profanity filter, added music tracks by Damjan Mravunac, and fixed bugs related to weapon mechanics and visual effects. Deluxe Edition Contents File: Serious.Sam.4.Deluxe.Edition.v1.08.zip ...
To run this version, your PC generally requires the following minimum specs according to Steam and System Requirements Lab : Update 1
: The official modding tool was released for free to Steam owners, enabling the creation of custom maps and cinematics. added music tracks by Damjan Mravunac
: Added 19 brand-new playable characters, including NPCs like Nonna, Hellfire, and Jones.