5 places to start. Follow whatever catches your eye.
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Oregon Trail II
Oregon Trail II Thoughts This game is the inspiration (at least in a large part) for Journey Express.
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Outer Wilds
Thoughts Coming soon! Progress Main Story: Completed.
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Outer Wilds - Echoes of the Eye
Thoughts Coming soon! Expansion Pack See Outer Wilds - Echoes of the Eye! Progress Main Story: Completed.
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Overball
Overball Thoughts I remember this game from way back in the day, but not too much about it specifically.
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Oxygen Not Included
Thoughts Entries.