I need to know exactly how to make a platformer.
Any good platformer projects will help!
Thanks so much!

Well, firstly you should learn how to do a sprite that can be controlled by the player. I recommend you that if its your first time doing this, try it out with a square instead of a complex sprite, that would be easier to work with.

OK, so, supposing you are planning to do a typical platformer with no scroll (no scroll means the screen doesnt move, as mario bros would do), the first thing would be to do the player physics:

1. You will need the player to jump so it can go through platforms.
   2. You will need some gravity, so the player can jump freely and not to be floating on the moon.
   3. You will need the player to move horizontally, that means, on the X axis, so he can run through the level.
   4. If you want to make numerous levels, you will need to design them and make them as difficult as you want.
   5. Finally, you will need and objective that the player can reach, so the level finishes somewhere.
   

The last thing i want to say, is that I encourage you to come up with the solution by your own by try and error, in that way you are gonna learn a lot. But, if you prefer not to invest that amount of time, you can go and see how other scratchers did it (but i repeat, its better to try it first).

If you want some examples of platformer, here i leave you two of my projects (they are not the best ones, but i hope they can help you):
1. https://scratch.mit.edu/projects/221112830/
2. https://scratch.mit.edu/projects/222143830/


I hope you come up with great projects! See ya later ^^

This is the best platform tutorial out there. Covers everything. Just go slowly through it so you can follow the scripts and what they are doing. It will have everything you need.

https://scratch.mit.edu/projects/67727504/