Mario Kart: Super Circuit is one of the games I remember most fondly when thinking about the Game Boy Advance. The console was still fresh and new back in 2001, and soon after launch it was playing host to a portable version of one of my favourite SNES games of all time. It felt too good to be true.
I still enjoy Super Circuit, even after almost a quarter of a century, so it amazes me now to hear that the game has been "fixed" by fans to make it even better.
As reported by Video Game Esoterica, Super Circuit is, in fact, hiding a dirty secret. While the game runs at 60fps, the track itself is rendering at half that frame rate. Thankfully, a new patch created by antimattur solves this issue.
"This patch modifies the map rendering code in mksc to update at 60fps," explains the developer. "This has no impact on performance as the map scaling parameters were already being updated at 60fps, but were only being read at 30fps."
You can grab the patch here, but you'll need to supply your own ROM.