I cannot pick just one, so... Fields of Mistria, Tomodatchi Life and Fire Emblem: Fortune's Weave. I unfortunately gravitate towards games that don't really end, and things with live service elements that are time limited (why am i playing 2 MMOs...) so.. oops.
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Fire Emblem: Green-Haired Character Smiling
ALT: Fire Emblem: Green-Haired Character Smiling