Universal Controller Fix was first released to the public by Dan Salvato on August 8th, 2017, accompanied by a YouTube video detailing its usage and changes. The lower threshold makes it so that spot dodging will not interfere as easily with shield dropping, and can be consistently performed on any controller.

If the control stick is held against the rim, and the player's shield is angled such that a shield roll is impossible, the spot dodge threshold is decreased from -0.7 to -0.8.

When playing the Ice Climbers, Nana's behavior is modified to move exactly as she would in vanilla Melee, preventing any unexpected occurrences in the modded version.

The dashback window is increased from one to two frames.

Universal Controller Fix alters the original Melee with two major changes: Under UCF, a player with any controller can perform techniques to the same level of consistency as with high-quality controller. UCF is intended to address the differences in quality between controllers, as a player with a better controller can perform certain advanced techniques more reliably than a player with a worse controller.

The mod was released in August 2017 and is currently in beta it is used to eliminate discrepancies between the performances of GameCube controllers during competitive matches. Universal Controller Fix, abbreviated as UCF, is a mod for Super Smash Bros.

Super smash bros melee mods