The purpose of FeynGame is two-fold: on the one hand, it should allow to draw Feynman diagrams of high quality in a very fast manner. It is thus well-suited for quickly supplying Keynote or PowerPoint presentations with Feynman diagrams through a simple cut-and-paste operation. Nevertheless, FeynGame also allows to print/export the diagrams as PDF vector graphic, which can then be included in manuscripts for books, scientific papers, or other type-set documents.
The second purpose of FeynGame is educational: since its usage is based on particle models (QED, SM, etc.), it can check whether a particular Feynman diagram is consistent with the underlying model. This provides the basis for playing games with Feynman diagrams. The current version of FeynGame contains the game InFin, where the player is asked to turn a random pair of initial and final states into a valid connected Feynman diagram. We believe that this may help to bring the concept of Feynman diagrams closer to high-school students or undergraduates. Forthcoming versions of FeynGame will include further games.