For anime fans such as myself this one's a given to try out. As the name suggests, you have to guess the anime song be that the opening, ending or an insert one from either TV series, ONAs, OVAs, special or even movies. While you can play by yourself, the best experience I've had with it is with friends and acquaintances who know more or less about the medium and banter about each series as it comes out.

Furthermore, it has heavy customization options as you can define the criteria of selection regarding not only type of anime but other options that come from the fact that you can link your MyAnimeList, Anilist among other tracking websites account to set the list. In other words, you could play a round of the series you've marked as watched or even do one with completely random guesses and see how it goes, maybe even finding some gems in the process.

At the time of writing this there was an update with a new dungeon crawler mode called Nexus that has its own set of rules and that you can play cooperatively against the AI with a new set of rules surrounding song guessing. I only played a little bit of it to give my proper thoughts about it but it's a cool idea.

Lastly, you can keep playing not only for practice purposes but to earn enough experience to get new avatars among other player customization options. There's also a ranked mode that you can only play during certain times of the day and the connectivity isn't the best if you're not from NA, Europe or some parts of Asia.