Ni No Kuni is a timeless masterpiece of a JRPG. The only reason to not own it is if the JRPG genre is just not your cup of tea. But if it is, you’ve got up to 100 hours of engaging game ahead of you, and those hours will not be forgotten.
Astral Chain is an excellent action game that uses the Switch’s unique hardware in creative ways. It fits handsomely in PlatinumGames’ excellent catalog and should satisfy anyone who likes Japanese action RPGs, or third-person action games. It is a wholly satisfying experience.
SolSeraph’s definitely a successful copycat that lacks originality. If you haven’t heard of or played ActRaiser, SolSeraph will seem quite unique. It’s an example of the finished product being greater than the sum of its parts: a good action platformer combined with a good RTS that makes for a very good package.