This app reads the mo-cap (Motion Capture) data files in the BVH format (used by many professional animation suits and game engines) and then generates the stick figures (based on the armatures these files contain) that move re-enacting the recorded motions. It is possible to move the figures around the scene without affecting their animation, to evaluate how the real game characters would interact, should these animations be re-targeted and applied to them.
The idea is to save time re-targeting a vast number of animations just to choose the ones that suit the authors purpose best.