Mighty No. 9. Got excited for fans when it was announced (wasn't a MM fan at the time), that dimmed when it started becoming a shitshow, I played a demo last year and just had an uneasy feeling about the whole thing.
No, but seriously speaking, Mario 1, USA, and 3. I couldn't get into 1 until I played Lost Levels and realized just how bad Mario 1 COULD have been under a worse developer; I couldn't appreciate USA until I really got into it, and I couldn't appreciate 3 personally until I really had a respect for 1. I saw what other people liked about them but I simply couldn't get into them myself. TL;DR Lost Levels is the most important Mario game because it's so bad.
You should check out my YouTube channel, The Golden Bolt! I review all types of video games, both classic and modern, and I also give short flyover reviews of the free games each month on PlayStation Plus to tell you if they're worth downloading. After all, the games may be free, but your time is valuable!
