Smod Arcade is a remake of The_Commander's long-dead SMOD: Deathmatch, it is a Singleplayer mod that aims to emulate a Multiplayer experience. Arcade is heavily RNG-based, every match starts you off with random weapons in a random map with 1 of 4 random gamemodes to play, with more being developed off and on!
For those who don't have HLSBase, CSSBase, DODBase, or DMSBase mounted. These are all supposed to go in your "steamapps/sourcemods/Smod Standalone" folder, so that Arcade can properly read them. This is covered under Valve's content usage guidelines, which state that usage of assets between games is permitted, provided their binaries and executables are not included.
This is a full version, right?