Call of Duty Games on PSP: Only Two Spin-Offs Exist

No mainline Call of Duty launched on PSP, but two spin-offs did:

• Call of Duty: Roads to Victory (2007) – Developed by Amaze Entertainment. Campaign covers US, Canadian, British forces in WWII. Single-player only; no infrastructure multiplayer (ad-hoc 6-player only).
• Call of Duty: World at War – Zombies (2008) – Port of the "Nazi Zombies" mode only. 3 maps (Nacht, Verrückt, Shi No Numa). Ad-hoc co-op up to 4. No campaign, no competitive MP.

Other Handheld CoD Games

• Nintendo DS: CoD 4: Modern Warfare (2007), CoD: World at War (2008), CoD: Modern Warfare Mobilized (2009), CoD: Black Ops (2010) – all by n-Space, with full campaigns + online via Nintendo Wi-Fi Connection.
• PS Vita: Call of Duty: Black Ops Declassified (2012) – criticized for short campaign, broken MP.

PSP got the short end of the stick—no online MP, no campaign in WaW Zombies.