Note: the vignette in the package wasn't updated, but this tutorial is updated and works with v0.3.1. Put your API key in your .Rprofile file using exactly this ...

JetLag is a framework for making 2D games that run in desktop and mobile browsers. It is the evolution of LibLOL, and at a high level, it is faithful to the spirit of LibLOL. In particular: JetLag is ...