I've done a small amount of testing on the 2s3s5s WebGL publishing. The player settings, portability, aspect ratios, etc. It works on my iPhone and my laptop.
The WebGL version of 2s3s5s forces a 16:8.75 aspect ratio to get all of the graphics to appear.
That's the only real problem I am finding: that the Goal Image Numbers disappear at certain aspect ratios, which is weird! The Goal Image Numbers disappear at 16:9 and a few others. That was no problem on Android builds!
This release differs from the Android version. I moved the check-mark graphics a little bit and removed the music. I'm impressed that the Unity WebGL publish will save PlayerPrefs as cookies by default.
The same "game rules" bugs from a year ago are still present.
Under certain circumstances, if you put some numbers on the bottom row, the colors will mess up on some of your answer. The game still knows you have a valid answer, but just turns on the wrong color anyway. What's nice is this is an easy bug to spot. It never turns an entire product red.
Under certain circumstances, the game will allow you to make products that are not goals. This doesn't seem to depend on anything spatially, its just happens. You could argue that its more fun that way. Maybe extra products should just go against your score, but still be allowed. I don't have any programmatic control of these non-goal products at this point. It's a bug-feature that's going to do what it pleases for the time being.