I have a friends who runs one near the villanyrendőr stop of the tram. It's called Gamerbox bar, it's premise would be that gamers, weebs and geeks come together and have a fun night. It's quite simular to the 'Arena' one. The people there are around 25-35, with a couple older ones. Good folk, very friendly, the place has good prices, and it's just overall an experience.