1

Serious Sam

Serious Sam: The First Encounter (2001)
1 Serious Sam: The First Encounter (2001)
Serious Sam: The Second Encounter (2002)
1 Serious Sam: The Second Encounter (2002)
Serious Sam HD (2009)
1 HD Serious Sam HD (2009)

The First Encounter, The Second Encounter felújított HD kiadása.

Serious Sam: Next Encounter (2004)
spinoff Serious Sam: Next Encounter (2004)
Serious Sam 2 (2005)
2 Serious Sam 2 (2005)
Serious Sam 3: BFE (2011)
3 Serious Sam 3: BFE (2011)
Serious Sam 4 (2020)
4 Serious Sam 4 (2020)

https://en.wikipedia.org/wiki/Serious_Sam