The third weekend of August was the 4th year of the Stargate Nights multiplayer festival in Bytča. This small Slovak festival has a completely different concept to which we might get used to. It takes place in the city, in several places, outdoors and inside. It brings music, theater and movies, and does not forget even the smallest. The top of the art part of the program was traditionally a video-map, which surprised its shape this year. Bytča became the only Slovak town with video cameras projected in a river in the middle of the square. On Friday evening, the water wall rising from the Petrovice River, which was exposed by a videomapping projection from the workshop TRAKT. We thank DHZ Hlinik for the water wall.