Increasing the Framerate of SNES Star Fox

It’s been possible for quite a while to increase the framerate of SNES Star Fox. Even during the SNES’ hardware release period, an updated version of the SuperFX chip that made it’s then-amazing 3D visuals possible was used that doubled its performance, and was used in other games like Yoshi’s Island. And now overclocking and emulation can increase SuperFX performance by much more.

But there’s a problem with speeding up Star Fox this way. The game wasn’t designed that the frame rate can be separated from the gameplay or animations. If you speed up the chip, you’ll speed up everything else in the game too, rapidly making it unplayable.

Some progress has been made recently towards improving the framerate without making it a twitchy stuttery mess. Tyler Loch made a video of his efforts (3½ minutes), and to people used playing Star Fox’s at its original 15fps it’s a wonder to behold:

Because the code has to be adjusted in many different places, there are parts of the game that are obviously incorrect. Falling pillars, you’ll notice, tilt over much faster, bosses move and fire much more rapidly and are more dangerous as a result, and the engine of the player’s Arwing spaceship flashes at a rate that some people may not appreciate. And the video shows off only the first level, because the full game isn’t finishable yet. But much progress has been made! Let us hope Tyler’s momentum holds up through the rest of the project.

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