The concept of making a map about parkour is very simple to play, you spawn on a floating island and have to survive and complete jumping challenges, parkour with only available resources, Parkour Craft Survival Jumper you can make a real floating island type survival map, and most of the survival maps are based on it. You have to jump block by block approaching your base from all sides instead of trying everything else that needs to be done before reaching the main destination area, maximize your parkour skills to reach the destination, create and play the map as you made it.
Parkour Craft Survival Jumper use code from the Minetest project, LGPL code: https://github.com/mayanisoo/Parkour-Craft-Survival-Jumper. You can always get the newest Minetest code from https://github.com/minetest/minetest