Mashing hectic time-limited multiplayer mashed up with Animal Crossing-style collection mechanics surely will yield interesting results. I am building a multiplayer game based on Phaser.JS + Socket.IO + Kii App Cloud, from base code at https://github.com/ChrisLHall/UnCactus , which is a descendant of Phaser's own multiplayer example game. If you are interested in trying to spin up a project with the same tech, shoot me a message and I'll do my best to help out!