Yes, it's a Nintendo Entertainment System. Plus, 4 guys with instruments! 8-bit “chiptunes” mixed with traditional instruments (guitar, drums, bass) are a winning combination for any past or present legacy gamer.
Anamanaguchi opened for a band that I saw last night called “PEELANDER-Z”. — While the latter of the two was more entertaining, the music of Anamanaguchi was actually really good.
It's the first CD that I've bought in a long time, and it was only $8 USD at the show! Check them out for sure.