Introducing the MKMC Classic Track pack! Re-play all the lost tracks from Mario Kart in Minecraft 2017 in the Sprint Racer engine. There's also been an update to base Sprint Racer (v1.6.7) that improves the custom track interface.
v1.2 of Good Phantom adds a new dream, a frontend for creating and editing custom dreams, and a new mode called "Phantom Racer" that mimics a traditional kart racing game.