A really fun and interesting game! I liked the mechanic, but a criticism is that the objects are covering 75% of my entire screen and it is slightly dizzy to see where you are going by needing to turn sideways. As well as a bug of Bubi disappearing.
A minor suggestion - indicate the pickup range on the crosshair or highlight the object, because it's a bit tough to estimate my depth perception and I kept misclicking.
Overall, I liked the concept and how the game looks and feels!