Played this with my kids; we all enjoyed the character sprite - particularly the smile face on there definitely making for a charming presentation. The jump mechanic could be improved by maybe instead of having a linear velocity try a parabola over time; it'll make for much smoother motion. The merging idea was neat; there were a couple places I thought a checkpoint would have been appreciated but - all and all - this is awesome work for such a short period of time! Nice job! :D