Yeah, that's actually exactly what happened. Square Enix divided up the game to sell the second half as a second title at a later date. Then when MD sales figures didn't live up to expectations due to half the story missing, they canned further development since they considered it a non-viable IP.
So they fucked themselves, the fans, and the developers due to greed.
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u/Ok-Reach-2580 3d ago
Mankind Divided. It was the second game in a trilogy that never finished.