The Zoo Universe Reading Order

1. Fight For Life and Death – Apocalypse Paused 01
2. Get Rich or Die Trying – Apocalypse Paused 02
3. Big Assed Global Kegger – Apocalypse Paused 03
4. Ambassadors and Scorpions – Apocalypse Paused 04
5. Nightmares From Hell – Apocalypse Paused 05
6. Calm Before the Storm – Apocalypse Paused 06
7. One Crazy Pilot – Apocalypse Paused 07
8. One Crazy Rescue – Apocalypse Paused 08
9. One Crazy Machine – Apocalypse Paused 09
10. One Crazy Life – Apocalypse Paused 10
11. One Crazy Set of Friends – Apocalypse Paused 11
12. One Crazy Set of Stories – Apocalypse Paused 12
13. He Was Not Prepared – Birth of Heavy Metal 01
14. She Is His Witness – Birth of Heavy Metal 02
15. Reprobates – BOHICA Chronicles 01
16. Degenerates – BOHICA Chronicles 02
17. Redeemables – BOHICA Chronicles 03
18. Thor – BOHICA Chronicles 04
19. Backstabbing Little Assets – Birth of Heavy Metal 03
20. Blood of My Enemies – Birth of Heavy Metal 04
21. Kill or Be Killed – Team Savage 01
22. Dead or Alive – Team Savage 02
23. Vengeance or Death – Team Savage 03
24. Get Out of Our Way – Birth of Heavy Metal 05
25. It All Falls Down – Birth of Heavy Metal 06
26. Justice Comes Due – Birth of Heavy Metal 07
27. All’s Fair in War – Birth of Heavy Metal 08
28. Hired Killer – Cryptid Assassin 01
29. Silent Death – Cryptid Assassin 02
30. Sacrificial Weapon – Cryptid Assassin 03
31. Head Hunter – Cryptid Assassin 04
32. Mc’Mercs – Cryptid Assassin 05
33. This is B.S. – Cryptid Assassin 06
34. Learn to Live – Cryptid Assassin 07
35. Monster in Me – Cryptid Assassin 08
36. An Assassin’s Accord – McFadden and Banks 01
37. Diplomatic Immunity – McFadden and Banks 02
38. Hostile Negotiations – McFadden and Banks 03
39. One Threat Too Real – McFadden and Banks 04
40. No Time For Fear – McFadden and Banks 05
41. One Decision Too Late – McFadden and Banks 06
42. Cataclysmic Mistakes – McFadden and Banks 07
43. Contained Apocalypse – McFadden and Banks 08
44. More Time to Kill – Birth of Heavy Metal 09
45. Contain or Die – Birth of Heavy Metal 10 

Complete series:
Apocalypse Paused
Team Savage
Cryptid Assassin
McFadden and Banks
Soldiers of Fame and Fortune
BOHICA Chronicles
Birth of Heavy Metal (may be more coming – not sure)
Dark Angel Merchant Marines
Dead Evil Mercenary Corps
One U.G.L.Y. Marine

Ongoing series:
Interstellar Security and Extraction Services