Johannes Loeffler

G^N is a special calculator not just a game:This math app animates iterations of one or compositions

Reversible takes place on a circle with several correlated arrows. The goal of this game is to make

PenroseStairs is set up in paradox scenes of impossible staircases, similar to the drawings of M. C.

Irreversible is a water jug game with constraints and helps to learn basic arithmetic operations: Ju

MusicCheck allows to systematically compose a small melody in a 3 step process:1. Specify up to 16 c