Call of Duty: Modern Warfare 2 Not on Wii—Only World at War Was Ported
Call of Duty: Modern Warfare 2 (2009) was never released on Wii.
Platforms
PlayStation 3
Xbox 360
PC (Steam)
Wii Call of Duty Titles
Call of Duty 3 (2006) — Launch title, Treyarch port.
Call of Duty: Modern Warfare — Reflex Edition (2009) — MW1 port, not MW2.
Call of Duty: World at War (2008) — Full campaign + zombies, downgraded graphics.
Call of Duty: Black Ops (2010) — Final CoD on Wii, no DLC support.
For MW2 on Nintendo hardware, play via backward compatibility on Wii U (not supported) or Switch (Cloud/port—unavailable). Modern Warfare II (2022) is on PS4/5, Xbox, PC only.