This made the tutorial especially jarring - when I saw a white fill blue, and a slightly translucent red, I ended up confused about yellow... was it the very translucent or slightly translucent?
I'd suggest changing one of the translucent colors to a full fill or some other representation, like stripes/polka dots.
Explain shape matching, and show some example combos, but then dive straight into playing a quick round where the only thing you have to match is shapes. Perhaps use less bins so it's not too easy, and set a lowish target amount of points to move on, say 10 or 15.
Increase difficulty by adding more parameters, I would add colour first, balancing a quick reward cycle with the more complex gameplay.
On the tutorial, with the animations you currently have you definitely need a way to let players skip them. I wanted to quit the tutorial half way through because I already understood it, and the three animations are identical once you know the idea. I was getting frustrated by the tutorial before I got to even touch the game.
All in all an interesting diversion, thanks!
Overall it was actually more difficult than it appeared on the face of it.
Yeah, you get the hang of it, but it's not easy when you start. Do you think it'd work to ignore fill at first and just have color and shape to match on?
About the animation speeds there were some that I just didn't need to see the animation at all but had no way of getting to the next page.
The only other annoyance was the buttons had a different cursor than is generally expected of a button but they functioned and that is really the biggest thing a button needs.
Rather than buying search ads and making money of pure arbitrage, I made a game that might inspire people to read about the technologies used in the game. Then I follow up with links.
Edit: I'm tracking some basic stats, and it looks like 50% of those who start the tutorial don't finish.
Saying that you can need to put together the same or all different forms/colors/fills should suffice. Whoever doesn't understand that probably won't have much fun with the game anyway.
When placing the third object in a bin clicking several times real fast gets you a) tons of points or b) -1 per click.
