I occasionally program some computer games. To keep it fun, I also like to add a bit of artificial intelligence or machine learning, wherever possible.
Currently only one game has been published: my Yahtzee training app. The goal of this game was to answer the question, 'Can you quantify luck?' It turns out that you can, as this app shows all too well.
I often organize team-building activities for groups, like groups of friends, colleagues, or companies looking for some fun yet educational activities. One of the most regular customers is the Delft Center for Systems and Control, where I arrange the team-building activities for their 80-100 new master students at the annual master introduction week.
In addition to only setting up "fun" team-building activities, I also occasionally give actual courses in teamwork, leadership and such. Through games, participants practice on working in a team. But through feedback and discussing how they should work together, they improve their skills.
One of the most sought-after games I developed (with some inspiration from friends) is the Telekinesis game. You can download it for free. Or if you're looking for more fun activities or advice on how to set them up, feel free to contact me. I'll help you out in any way I can.
At Force Elektro we got kind of bored with all the frisbee trick shots popping up on YouTube. They didn't really show the sport of Ultimate Frisbee. And that's a pity, because there's a lot to show there.
So Titus and I got together to make a video which does. The result? Urban Ultimate. Within 24 hours, it passed the 10k views, surpassing all our expectations. Is it worth it? Judge for yourself.
As part of the foundation Vierkant voor Wiskunde some friends and I organize mathematically themed summer camps for high school kids.
An assortment of geeks? Not quite. It attracts people with very broad interests. In general, it's a community of people curious about the world - every part of it - which is the best kind of people to be around. It's inspiring, educational, and mostly a lot of fun.
In my spare time, I also like to teach myself how to play various musical instruments. Though I never spend enough time on it to become any good, it's a great way to pass the time.
And sometimes it's fun to perform pieces too. Some time ago I performed Game Day, after six basic lessons. (Okay, and a few years of dabbling around prior to that.)
Lately, I've been more looking into music composition though, writing my own pieces. There's a whole world to discover there too.