Neat! I was big into Quake years ago. This looks like something I could waste a weekend on. Are these all single-player maps? Are there any that are designed f

Neat! I was big into Quake years ago. This looks like something I could waste a weekend on. Are these all single-player maps? Are there any that are designed for (or would at least be suitable for) 1-4 player deathmatch?