: This will disable Steam Achievements for that session.
: Features options like Unlimited Health, Shield, Ammo, and One-Hit Kills. Download Serious Sam Plus 21 Trainer zip
If you tell me in the series you're playing (e.g., The First Encounter , Serious Sam 4 ), I can give you the exact cheat list or mod link for that version. Serious Sam 4 Cheats and Trainer for Steam : This will disable Steam Achievements for that session
You often don't need a zip download. You can unlock powerful cheats directly in the game console: Serious Sam Classic (TFE/TSE) Open the console with ~ . Type cht_bEnableCheats=1 or 2 for advanced options. Access the menu by pressing or ESC then F3 . Serious Sam 2 Open the console with ~ . The First Encounter