SmileyHouse was a fun and quirky MMORPG made in Multimedia Fusion using MooClick that was active between 2002 and 2008 where everyone had their own customisable smiley. It featured player-on-player combat, enemy monsters to fight, mining, fishing, cooking, quests, rubber chickens, dungeons and of course tree shaking. Many of the players were, perhaps unsurprisingly, members of the Klik community, and ended up joining in with the development of the game by making their own mini-games, contributing graphics, or suggesting ideas. I ended up joining the team pretty early on, but the main author is LittleWashu AKA Code6.
Code6 will be turning his Jamagic-based servers back on for a reunion event which kicks off on Sunday the 22nd of September 2019 (1PM EST, which is 6PM BST or 5pm UTC). He has even recovered everyone's old player accounts from a 2010 backup. At present there are no plans for the official server to remain up for more than a few days after the event so be sure to put it in your calendar.
For more information you can check out the Official SmileyHouse Reunion website. The whole event will be organised via the SmileyHouse Discord so those taking part are advised to join the chat for technical support and general discussion. People are also encouraged to spread the news about this reunion amongst the community, especially for those in touch with people who used to play the game back in the day.