Have some time free over the next 9 days? The Linux Game Jam 2019 just launched and could be a way for you to show off a little or just have some fun.
The rules are pretty simple: it must have a Linux build, programming for the game has to be done during the Game Jam to be fair, give clear instructions on how to run the game, extra points if it's open source, it must be submitted to their itch.io page before April 20th 2019 at 4 AM UTC.
What's really fun to see, is that they have managed to pull in a few experienced developers to act as mentors and give advice this year.
They have Rémi Verschelde (Akien) who is the project manager for Godot Engine; Jakub (kubecz3k) the co-founder of kivano.games (also a Godot Engine contributor); Marc (mdiluz) a software engineer at Unity who previously worked for Feral Interactive; Nuno Donato an experienced Linux based game and tool developer and Josh Bush (Cheeseness) who has contributed on GamingOnLinux numerous times as well as porting games to Linux, makes their own games and so on.
You can find the Linux Game Jam 2019 over on itch.io.
I would have given early warning about the Linux Game Jam 2019 but surprisingly no one notified me about it.