What engine does the Witcher use?

Related questions

1. Should Ciri go to the emperor?
2. How does The Witcher 3 end?
3. How much money did CD Projekt RED make from the Witcher 3?
4. Do Witchers die of old age?
5. Is CD Projekt Red polish?
6. Is Ciri becoming a witcher a good ending?
7. Does Ciri die in the white frost?
8. How much did the Witcher 3 make?
9. How much did it cost to make The Witcher 3?

Tags

1. #engine
2. #developed
3. #replaced
4. #originally
5. #witcher
6. #kings
7. #bioware
8. #games
9. #studio
10. #redengine
11. #projekt
12. #aurora
13. #licensed
14. #assassins