A monthly tournament in the game Splatoon. Each participant must choose a team, for example, spongebob vs. Patrick. The tournament is region-specific, thus America and European countries do not have to compete with the vast hoard of ninja Japanese players from hell. The reward for winning is a bunch if snails and a mother and father who say they are proud of you but weep in the night
Yo, you getting in on the splatfest this weekend?
Nah, I smashed my Wii U after losing 300-0 to some Japanese dudes.
A splatfest is where you pick a side and do turf wars to decide which one is better!
Person 1:Hey! What side are you on in the splatfest? I'm on Cake
Person 2: Nice! I'm on side ice cream!