Been doing both multiplayer and singleplayer in Splatoon and it's a pretty fun game.  Super casual, colorful, very enjoyable.  I think my only real complaint is the lack of variety in maps.  They only allow two maps out of the 6 to be playable at a time, changing them up I think every few hours, so you mostly just end up replaying the maps a lot.  I guess they did this so you are more likely to learn the maps, but when you are replaying the maps in a quick pace due to the game times and fast turnaround, you are on those two maps a lot lol  Still fun though.