This prototype was made to try out different powerup mechanics. This video showcases one strategy where powerup is activated by hitting a special block. You get an 5X multiplier until it ends.

After a few iterations, it was later changed so you get a boost everytime you enter a tunnel. While inside the tunnel, you cannot lose the boost. When you get outside the tunnel, you're on your own and missing a block will end the boost. If you do manage to keep it until the next tunnel, the score multiplier will increase! The game suddenly revolves alot around the boosts, but I'm fine with that! I think this will really set apart the really good runs from the less good ones.

I also improved the graphics quite a bit in this prototype, so I'm happy with that too!