Thanks for your reply! About the effects: when we were doing it, we only tested it on the Windows version and it looked pretty enough for tired us at the night... When we saw it at the end, and in the browser version, it really looked a little bit annoying after a while.
About the UI, we really did a bad job and didn't explain the gameplay clearly, because it was done in the last hours of the game jam, so...ha-ha...
We will try our best on future projects with this aspect of games and will take your opinion into consideration, thanks! :>
(and also, thanks for the idea about an auto-making button, we really didn't think of it)