New Campaigns that overwrite the Original BFE and JotN.

As for Serious Sam 3: Extended, it does not affect the progress and scores of Original BFE and JotN, and uninstalling it does not erase the progress and scores for either the Original or Modded Campaign/s.


Note about High Scores & Progression: Unsubscribing from a Custom Campaign or Level will not reset/delete your Score/s and Progression for it.

Note about Classic Sam Secret in the First Level: If a Campaign happen to take directly from the original, Croteam's SS3 Campaign, the Secret Shoes in the third floor of a building about midway through can cause problems if you happen to use the "Play as Multiplayer Characters in Single-Player" Mod; if you play as another character than "Default Sam", picking these Shoes will Crash the game, and if you've saved, trying another Player Model will also cause a Crash. So, if you want to pick up this specific Secret, you need to play the First Level as the Default "Serious Sam" and, after picking them up and completing the Level, then you can switch to another Player Model.

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Note about Serious Sam 3: Extended: This Campaign also doubles your Max Ammo on Serious difficulty, which is carried across other Campaigns.