Wow, this is such a good game! The concept, the sound, music, visuals! I like the tension between needing to choose when to boost and not to boost.
Was just checking out how you did this and just in case you didn't know, you can flatten out the `with` block like this in Easel:
with BoostLevel {
with ViewZoom {
with OverheatFlashOn {
with ShakeOffset {
This can be:
with BoostLevel, ViewZoom, OverheatFlashOn, ShakeOffset { }
Really really awesome work!