which version of COD should i buy?

[Flixer]

since there is a steam sale on all the call of duty versions which one should I buy?
and about black ops 3 there is like 2 versions and one is multiplayer only the second one title is zombie chronicles edition I want the one that got all 3 campaign zombie and multiplayer
and just in general not only black ops which one do u think is worth buying?

 

[Zloth]

The original was really fun!

Save 50% on Call of Duty® (2003) on Steam

Call of Duty® delivers the gritty realism and cinematic intensity of World War II's epic battlefield moments like never before.

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[Flixer]

The original was really fun!

Save 50% on Call of Duty® (2003) on Steam

Call of Duty® delivers the gritty realism and cinematic intensity of World War II's epic battlefield moments like never before.

store.steampowered.com

I want one of the latest versions yk