Unofficial Factorio 2.1 port of 'Speed Control' by Fentus (s2upidperson), until an official 2.1 release exists. Not compatible with the original. Adds buttons and hotkeys to increase or decrease the speed of the game, now with configurable speed increments and limits. Hot Keys: (Minus / Plus / Shift+Minus / Shift+Plus / Alt+Minus / Alt+Plus).
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.