This announcement is a couple months late, but we have a trainer for PS1 emulator! Made by myself and @Avouca, it allows you to practice tricks and explore levels similar to how DogThing does for PC.

With PSXThing, you can:

• load premade savestates to practice levels and tricks
• show position, speed, stats, and level progress
• view boss behavior in Cruella levels
• turn walls off
• enable flying, invincibility, and infinite roll
• end levels instantly

The trainer can't be used during runs, but it can be used to practice tricks, boss fights, and routes. Find instructions for setup here: https://docs.google.com/document/d/1B1IUNbE7gHxNwOysCHTjDs0vUzd4LJii9ESLQaXolmQ/edit