The most dangerous geek game of hopscotch ever

You might recall hopscotch from school days. Perhaps it was not all that long ago you walked along the pavement and looked down to the see chalky designs of neighbourhood kids who had been playing. It’s a game about bounce and balance. I should have known GLaDOS would turn up.

How does this game of hopscotch look to you? I sense danger. I sense problems for anyone taking part in this game who does not quite manage to fulfil all the success criteria.