Improved visual clarity

## Improve Multiplier Visuals

The game had a multiplier mechanic which wasn't very obvious when playing. Now the cubes will shrink as they rise towards the gate, and visually better communicate their capability to add to the multiplier.

##Improved visuals for direction indication

A small update for the direction indicator, to better match the player color

##Prevent glitches at very high scores

When high scores were reached, the spawning cubes could become problematic, launching other cubes with excessive force. This issue should now be less likely to occur.