Hatsune Miku: Project Mirai DX is an unusual game, with a lot of references things that are very Japanese. The appearance of Puyo Puyo 39 is one, since the series hasn’t appeared often outside of Japan recently. Room decorations like the omikuji fortune telling box are another, as the precognitive device isn’t something everyone knows about. But one element people may not immediately recognize is the very obvious nod to Niconico.

Niconico is a Japanese video sharing website in Japan, one which many people use to share Vocaloid music videos. It’s hallmark is the comment system. When people are watching a video, they can say what they think about a specific part of the presentation. This then appears overlaid on top of the video for future viewers to see at that very moment when they watch.

Hatsune Miku: Project Mirai DX proceeds in a very similar fashion. Up to 250 comments can appear on a video, and these will scroll across the top screen. People can use regular text and emoji, and choose to share their comments with other people via StreetPass and SpotPass. It’s a nice nod to Miku’s roots, which many may not catch otherwise.

Hopefully, people will put this comment system to a practical use. Hatsune Miku: Project Mirai DX doesn’t offer translations of its songs. The lyrics are transcribed into romanji, but that won’t be much help to people who don’t know Japanese. With the comment function, people who do know what the characters are singing could attempt to tell others what’s going on in the songs.

Hatsune Miku: Project Mirai DX comes to the Nintendo 3DS on September 8.It will be $39.99.