Yeah, the timing is a bit tight to make the piano sound good whenever a note is triggered.  One thing that would improve the experience greatly would be some visual feedback on clicks that aren’t timed properly (maybe “Early!” and “Late!” pop ups or just a different, sad particle effect), so it’s clear that the input isn’t being ignored.   Or being able to tell when the input is actually ignored by mistake.

You said you were able to unlock all of the colors eventually, so at least it seems that clicks weren’t entirely broken for your browser type or something?

I'm glad you enjoyed!  Thanks for playing :)

Yeah, you're right that there's some empty space in the middle and end of days after you've achieved the combo.  I considered unlocking the next sign immediately, but I think forcing players to slow down and just play/experiment with the flowers that they have available now (including the new one just unlocked during that day!) fits the chill, lazy vibe more.  Or have a bit of time to just sit and watch the scene change, without even worrying about the flowers.

As for rhythms, I explored allowing "off-beat" clicks (like, eighth notes) as well, during a combo.  It felt a bit too hectic for the pace I wanted though, and representing this on the combo meter was going to be a bit of extra work that I decided wasn't worth it.  I also considered black flowers playing two eighth notes instead of a single quarter note as a fun twist for the final flower.  Deciding what notes to play would have been kind of arbitrary though and the current five intervals of [root, third, fifth, seventh, octave] for the five colors (the same intervals used in the background chords) was hard to disturb.  Maybe for a sixth color!  All that said, I think there's definitely space for some more interesting rhythm here.

Thanks for playing and for the fun discussion both here and on your own game :)

 I wanted the flowers to feel like an instrument you could play, so I'm glad you enjoyed the variety that I managed to work in.  Thanks for playing! 

I think a collection of additional combos is a great suggestion.  That would give the "end game" which is currently just jamming out on all of the flowers a bit more structure.

Thanks for playing, and I really appreciate "surprisingly addictive, even if trivial".  This is exactly the vibe I intended, and I'm happy you feel that way :)

Thanks for playing!

I don't think I'll add any more content to this one unfortunately.  There's a few things that I think would fit great as additional features (most of which people have mentioned in comments here, like a larger list of arrangements to discover / create), but I'm happy with it in its current state and will likely spend my time on other new projects and jams since I've only recently started focusing on game dev more seriously.

If only Stardew Valley had tulips and windmills ;)  Thanks for playing!

Thank you! I'm glad you enjoyed the vibe, that was the main goal of this project :)

One idea that never panned out was having an "end game" arrangement that required a very long combo--long enough that breaking the combo would likely mean finishing it would be impossible that day.  But the color randomness when growing new tulips would become an issue for having the right color available to continue the combo, and that kind of difficulty wasn't aligning with the super cozy summer vibe that I wanted.

Thanks for playing, and I'm glad you enjoyed! :)