To play Spearmint Quake 3, after extracting the Spearmint download you need to copy the Quake 3 pak.pk3 files into spearmint-version-platform\baseq3\. Option to fade out explosion lights instead of shrinking them (set cg_fadeExplosions cvar to 1).In multiplayer with gibs disabled, bodies no longer become invisible when gibbed.Player shadow moves with model animations.Gibs and bullet shells ride on moving platforms.
You can discuss Spearmint on Discord (Fragmint★Wonderland #spearmint). If you want to play on Quake III Arena servers I would recommend using ioquake3 and my widescreen HUD mod. Spearmint is not compatible with Quake III Arena servers, mods (the QVM/DLL files), or demos (game recordings).
It was originally intended to be used exclusively for creating new games but it kept the ability to play the Quake 3 data. It is directly based on ioquake3 (November 2018). Spearmint is a heavily modified version of the Quake III Arena engine.