Very clean gameplay! Simple rules you can get instantly: very nice. I made it to round 8 with -44,800 points.
I like how each set of 10 has its own color (41-50 are purple, 51-60s are pink), though I wish it was 40-49. I'd also like to see the color of the number on the left so it's easier to find (you can probably just gray it out when it's collected instead of turning it green). It'd also be nice if the numbers were in order, though I know that's not how the lottery works.
I liked the music! I do wish there were an open/close sound for the collector.
At first I thought it was too easy at the beginning, but it does get more difficult nearer the end. I do think maybe a larger vacuum effect could make it a bit more challening.