Mario is Missing Guides and Walkthroughs
This page here will share minor tidbits, tricks, cheats and hints about Mario is Missing. As with many of the other guides on my website these are designed to be very google friendly. If you're stuck, and googling to get done a certain part of the game, that's hopefully how you found this guide!
Activate the following passwords at the Title Screen.
Buenos Aires: RHMWQ1
London : R0MW71
Everything becomes completed: RHVWQF
Mexico City: RHNWQ0
New York: 6GM281
San Francisco: 8GMC81