SpiritSphere DX is a good game. Its colorful cast of characters and catchy, earworm soundtrack are all-around inviting and pleasant. The core gameplay (and, for my money, the addicting Squash Mode) is fun alone or with a friend. However, the general lack of single player content and a few disappointing design decisions keep it from being a must-have.
Iconoclasts is a game that you can't help but smile while playing. The meticulous attention to detail in every facet of the game save its storytelling (which is good, just not great) is remarkable. Failure to capitalize on the Switch's HD Rumble is a bit disappointing, but it's a minor blemish on an otherwise excellent experience.