Oh man, I thought of a much better one for this: the Skylanders series.
I won’t defend its physical DLC model that managed to get worse every year, but there’s still something magical about putting those figures down and seeing them come to life on the TV. Even after Disney Infinity came out, I preferred the streamlined action/platformer gameplay, the creative new characters, and the handcrafted levels of Skylanders compared to the sandbox-y jack-of-all-trades master-of-none approach that Infinity took.
Of course, the biggest reason of all is that my 4-year-old loves the series. We play coop together, I read the guidebooks to him, and we talk about which characters we like the best. It’s great.