3 ** unstable physics computations
5 ** level domino + box + basketball
7 ** level domino + box + basketball + teetertooter
8 ** intro animation (from target item to start position)
9 ** optimize images creation (python setup.py images)
10 ** use dds files in place of png/jpg
15 ** do intro video with moviepy
17 ** magnet, road cone, bucket
19 ** itch.io's client works with wine: functional tests for windows-itch.io