I just finished a game inspired by agario using Construct's multiplayer plugin.
In this game you are a fish, your goal is to eat all the littler fish to grow bigger. There are theoretically unlimited players who can play it. Here's a screenshot
You can play the game for free on Synaptop. (This is a link to the external page for the game, you have to log in to actually play it)
As usual, I welcome any feedback, be it questions, comments or concerns.