Would you like to know more about ROM hacks or the Mario Kart series? I'm here to help!
"The game boots to a black screen." Solution: You used the wrong base ROM. Amped Up specifically requires the Mario Kart 64 (U) [!] (GoodN64 hash) . A European (E) or Rev A ROM will brick.
That being said, I'll provide you with a deep post on the topic, focusing on the game's features, history, and community.
The "Amped Up" version introduces several new features that breathe fresh life into the classic game: