As a gamer dad of four kids—ages 3, 7, 11, and 13—I’ve seen firsthand how the best co-op Nintendo Switch games can turn an evening of quiet entertainment into a full-blown family bonding experience.

A busy year for Nintendo continues with its latest Direct livestream. And it was a big one spanning more than an hour of announcements and trailers, with quite a few surprises. We still don’t know all ...