JUMP 4K - Craptastic 2020

The story:
In a dystopic future USA, a small group of innocent homeless people have been kidnapped and forced to participate in a live reality TV show.

The whole group is offered their freedom if they manage to survive the running challenge where there is only one rule:
Keep moving and do not fall - you have only one chance. Fail and everybody die!

How to play:
This game is simple to play but hard to master. You control all stickmen at the same time, and to keep them alive all you have to do is  JUMP OVER THE STONES.

Control the stickmen by keyboard only!
F1 = Jump with stickman on top floor
F3 = Jump with stickman on third floor
F5 = Jump with stickman on second floor
F7 = Jump with stickman on first floor.

Hint & Tips:
This game is easiest to play on real hardware as the position of the function keys matches the floor the stickmen is located on.

Other info:
This game was created for the Craptastic 4K Game Compo. 
Final result:  13th place in the compo

Update:
When starting the game, you died even before the game was started! This is a fixed version that fixes this problem.

Credits:
Code: Docster / Kaare Johansen
Graphics and Music: Roy Widding
Help written by: Roy Widding
Docs viewer coded by: Scroll