Should I play XCOM Enemy Unknown first?

Related questions

1. Can I run XCOM 2?
2. Will there be more XCOM 2 DLC?
3. Is XCOM 2 War of the chosen a separate game?
4. What is XCOM second wave?
5. What type of game is XCOM 2?
6. Why is g2a so cheap?
7. Does XCOM Enemy Within include Enemy Unknown?
8. Does XCOM Enemy Within include DLC?
9. What is the avatar project in XCOM 2?
10. Does War of the chosen require XCOM 2?

Tags

1. #compelling
2. #expansion
3. #progression
4. #answer
5. #something
6. #options
7. #enemy
8. #basic
9. #change
10. #upgrades
11. #reason
12. #unless
13. #really
14. #there
15. #within
16. #mission
17. #unknown
18. #types
19. #simply
20. #story