Quakespasm-Spiked (aka: QSS) - a Quake Engine based on QuakeSpasm.

Features:
* Based on QuakeSpasm, offering familiarity.
* Retains Quakespasm's look and feel.
* Superior networking (server just needs port 26000 forwarded
through NATs, without having to deal with DMZ nonsense).
* High framerates no longer affect physics.
* Expanded limits vs Quakespasm.
* Plethora of SSQC extensions (to make the impossible
possible!).
* Simple CSQC support, for mod-specific huds and menus!
* Optional fancy particle system (compatible with FTE+DP).
* Optional PNG texture replacements (not just tga).
* MD3 model support, basic IQM support.
* PK3 support.
* Ogg vorbis for sound effects as well as just music.
* Fixes 'sticky walls' bug.
* Skyrooms ("_skyroom" "x y z paralax rotspeed rotx roty rotz"
worldspawn key).
* Per-entity BSP Contents overrides
(eg: self.skin = CONTENTS_WATER;).
* Supports lightmap scaling, BSPX lits, and lots more stuff!
* Increased lightstyle limit (beyond 255). Requires updated
light util.
* Increased lightstyles-per-face limit (up to 16). Requires
updated light util.
* Voicechat (can be embedded into demos).
* Provides misc_model support, for mods that do not.

Game data must be placed in ~/.quakespasm/id1 .