Rocket jump, in Swedish. Once a gameplay exploit popularized in Doom and Quake, it's now a core aspect of gameplay in games such as Team Fortress 2. 

The players created a new gameplay mechanic by exploiting a bug in the physics system, and it's now a common move recognised by all. It's a cool bit of emergent game design.

Also, rumour has it I once worked as a mechanical engineer on a space project.


Who is this guy?

Jacob in ceremonial Swedish gamedev clothes

I'm Jacob. I do research and development for the Interactive Institute in Göteborg. This usually means I'm building AR and VR prototypes. I also write papers.