Well-designed graphics and introductions for each different shape type, indicated the varying mechanics very well. Enjoyed the “story” beats between levels as well, fun little addition to an already great little physics puzzler!
Biggest issue was in “Test No. 8” where, if the ball gets stuck in a corner, it’s very difficult to get it back to the arena again - maybe could be solved with a gravity-box bordering the whole level to shunt it back to the middle - but being able to reset the level was workaround enough to make it to the end. 😄👍