So, I'm making a platformer and I need some help. I have no idea how to make collision scripts, so the sprite walks right through walls. Help!
(you can check it out on my profile page, its called "Save Them v.0.3

Just need to incorporate the sensing blocks into your movment logic. If the walls are a colour then use if touching colour. If the walls are a sprite then you can use if touching sprite. So in the movement script put if touching colour or sprite then undo the last move.

Check out the sticky topics for other ideas.

cool thanks

How do you do this?

Which bit? Have you looked at the links in the 2 sticky topics in this forum?