Press a modifier (soon[tm]) key and walk slowly, press another and walk even slower, get in and out of vehicles safely (only when standing still) and you even can do the moonwalk Credit for disabling exoskeleton bonus to 'turtle speed mod' from DedlySpyder https://mods.factorio.com/mods/DedlySpyder/Turtle_Speed https://github.com/DedlySpyder/Turtle_Speed
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.