Making Grounded 2 Was The Only Way Obsidian Could Introduce This Key Feature
Briefly

Grounded 2 is emerging soon after the original, despite continuous updates to the first game. Obsidian's director Chris Parker explained that advancing technology and the desire for new features like vehicles prompted the move to a sequel. Although the original game had major updates, constraints from supporting older consoles like Xbox One influenced the decision. The team felt that to explore certain gameplay mechanics effectively, they needed to revamp the game world holistically.
"We did continue to build on Grounded. There were four major updates after Grounded 1.0 released. But on one hand, there were some limitations with technology."
"In order to solve [the new vehicles], we really needed to think about how they worked in the world, and what that world space looked like."
Read at GameSpot
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