GuffoChallenges
GuffoChallenges are a bi-weekly (2-week-long) Fancade event created by Guffo (TonoCia0n3). Originally started as a collaborative game jam, it is currently a solo game jam in which given a character (which can be found in an editable kit on Fancade), participants have to make and submit a game within a set time limit, which is usually of 2 weeks, but it can last more if not enough games are submitted within the deadline.
You can visit the official GuffoChallenges website to know more about the event and every past submission!
History
The challenges were first hosted on the since-archived Discord server named "Guffo Garden", where the event was called "Collab Challenges" and was a side activity, up until the 6th edition. After that, participants were given a theme to follow instead, and was also collaborative, right upto the 8th edition, when it got its own separate server called "GuffoChallenges", up and running to this day.
Currently, participation is under this server. Submissions are under the channel #submissions (but note one needs a role in order to participate; you may ask to get it).