Do you have to unlock multiplayer maps?

Games Halo 5: Guardians
1

I just tried to start a custom game so I could look around the multiplayer maps but it wouldn’t let me select any maps other than Fathom. Do I have to play Arena in order to unlock them?

2

ummm no, are you sure you are pressing 343(its a section thats highlighted when you enter customs), than searching through.

3

> 2533274840624875;2:
> ummm no, are you sure you are pressing 343(its a section thats highlighted when you enter customs), than searching through.

I thought I did. I will try again. Thanks.