Mario + Rabbids came out last year. The surprising crossover is a tactics game that has Mario and friends teaming up with Rabbid doppelgangers. It had been one of the most successful third-party games for the Switch.
This DLC adds Donkey Kong and his Rabbid friend as new playable characters. It also adds a new, tropical world to explore filled with new enemies.
But the best part might be the musical performance onstage, the second of the day for Ubisoft as it showed a light spirit and fun during the E3 event.