(EDIT AT BOTTOM)
It's pretty simple concept that's interesting enough but could be improved with additional mechanics and level design.
However, this game somehow feels like a downgrade compared to the first Balb: The aspect ratio is small, contrast between the background and character is almost non-existent and hard makes it hard to see, moving through the side borders makes balb fall indefinitely until you jump, and level 5-1 appears to be impossible. Level one also plays twice.
I think these can be fixed and add some sound. Making objects (such as the orb over the spikes) do something like invert gravity could spice up puzzles.
EDIT: Every problem I said was fixed in Balb 2+ :)
Pretty impressive this little game was made and updated an hour each, I can SEE Balb (and his friend), he shoots a laser, doesn't trip while breaking the 4th wall, and he can double jump now!
You even went the extra mile for medals and a leaderboard! Bravo!
There's a minor error: The number of secrets on the title screen won't update, but the medals are working :)
I can't wait for Balb [REDACTED]