I must say that this idea is great and gives the player more challenge than spikes. It's trying to use my brain a lot. Sadly the spikes are not too noticable so players like me hard to notice and keep aware anytime. Overall it's a simple fun game.
Heard about the problem with spike visibility alot, problem was I did most level testing with no background (bushes/trees which made the spikes stand out more,
after adding decoration, I already knew where the spikes are so I didn't notice how hard they are to spot
