For a first jam game, this is simple and well executed! It took me a while to remember which key went with which shape, but I guess that's kind of the point. Having 3 up at any time threw me off, initially, as well, but I got the hang of it and it was fun! Good job, and welcome to the jam. Hope you had a good time. :)

Hey this was fun! I second what John said, entering only the combinations for left-most item made me play it without ease. It's pretty hard to remember which key corresponds to which shape. I had to use a mnemotic to remember: shape colors are in "red green blue" order, which is same as RGB. :D

Another complaint is that sometimes if two patterns start with same shape, the game doesn't allow me to choose which pattern to enter, so I end up making an unintentional mistake.

Otherwise, pretty polished for a first jam game! Well done!