What was the first 3d Sonic game?

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Tags

1. #success
2. #hedgehog
3. #toshokan
4. #puzzle
5. #sonic
6. #master
7. #genesis
8. #released
9. #platform
10. #games
11. #system
12. #began
13. #introduced
14. #releasing
15. #series
16. #exclusively
17. #eraser
18. #there