Dead Ops Arcade: Main Menu → Zombies → **Hold (2) on Wii Remote + Nunchuk** → press **A** → "DOA" unlocks (classic twin-stick shooter).
Intel / Campaign Cheats (Single-Player Only): Enter codes in **Mission Select** menu (not main menu). Example: `3ARC UNLOCK` (unlocks all missions), `3ARC INTEL` (all intel). **Disables achievements for that session.**
Best Experience
Play **Custom Games (Local Split-Screen)** with friends — bots, modifiers, no anti-cheat, pure fun. That's the Wii version's hidden gem.