Game info
System: Nintendo Entertainment System
Developer: Jaleco
Publisher: Nintendo
 
Release info
[USA] Maniac Mansion
Date:  
[Europe] Maniac Mansion
Date:  
Cameo appearances and references

When you turn on a "video game," some music is played, and you hear the first five notes of the well-known Super Mario Bros. theme.

Wiki
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The Mushroom Kingdom \ The Games \ Nintendo Entertainment System \ Maniac Mansion