When first looking at Syntensity, one might infer that it is an FPS game. Nothing could be further than the truth. Syntensity's main achievement is the Intensity Engine, which is a significantly modified version of the Sauerbraten/Cube2 Engine with a focus on online content. One could even draw parallels to proprietary gaming and say that this might be a FOSS answer to Valve's Steam service and their Source engine.