Scratch

Very cool 

Couple of small bugs, the biggest one is that you need to have a "show" button on the portals when the green flag is clicked or else the portal won't appear if the game has been finished and its really hard to play 
Perhaps instead of having black lines which you can climb and purple lines which teleport how about having a 3rd colour line, green for example that you cannot travel through.
At the moment you can go left and right through black lines which makes some levels very easy.


Very good start and a great idea 
Well done!