In the next three weeks, on January 25th-27th there will be a Global Game Jam - 48h coding marathon for game developers. I’m organizing the Warsaw Game Jam, and there will be three events during one weekend: Global Game Jam mentioned earlier, Mozilla Game On competition and an initiative called One Game a Month. If you’re near Warsaw on that weekend come join us!
The Gamedev.js Meetups community was created to promote HTML5 game development events in Poland. You can find more info about the Warsaw Game Jam on the event website or in my blog post, and you can add yourself to the Facebook event page. It’s mainly for the Polish speaking game developers, so the language used is Polish only, but if you want to join us please do so. If you have any questions feel free to ask them in the comments.