How do I design a platform game level

Hello! I make a platform based game for mobile phone and performance is very sufficient.

I heard that we shouldn't create a lot of objects. My game is something which is called handemade, and every sprite has a position I want. And the question is how to make a lot of objects on canvas without slowing fps? Should I determine distance between character and then create object or all objects which are on canvas but not on display don't Make fps lower?

If you have alot of animation frames in your game, take a look at "Spriter" software.

And you can read ashley post : https://www.scirra.com/blog/112/remembe ... our-memory

My game is huge and what i learn is the animation frames and particles and save & load checkpoint and webgl effects will drop your fps.