If you get the dreaded "Version Mismatch" error, ensure you have patched your Serious Sam to version 1.07 or 1.10. TeknoSam 2.0 does not work with the 1.12 beta patch.
: The update added Steam Trading Cards , animated avatars, and profile backgrounds to the Serious Sam 2 Steam Store Page . teknosam 2 0 serious sam 20
TSE expanded the arsenal significantly from The First Encounter . The introduction of the Chainsaw, the Sniper Rifle, and the Flamethrower added layers to the weapon economy. If you get the dreaded "Version Mismatch" error,