I have Blaster Master Zero and it's a fun game. Also I played the PS4 version of Disgaea 5 Complete and I loved it. I'm gonna be getting it on my Switch tomorrow.
Splatoon 2 is an awesome game with an excellent PvP mode, a story mode with great puzzle mechanics and fun collectibles, and super crisp gameplay all around. There is also a cooperative horde-like mode that gets increasingly more difficult as you level up and all of the above earns you new gear with customizable attributes. I highly recommend the game.