Reply to Re: Crazy Old Tim Plays All the Rest of the D-Mods
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Looking at the original game's walkthrough, it doesn't really specify if you have to complete Joppa Isle or not. It does say that you can leave Windemere right away after the main quest there is done with, but it's not clear whether this means you can just leave to wander around the map aimlessly for your own fun, or if it means you can leave and move forward in the game.