Hi! Thank you for your feedback. When you talk about speed, are you referring to the bat's movement, or to the echo-location's travel time?We're glad to see sounds and art have been overall well received!
Both!! A way you could cheese this is to add a button to change the Engine.timescale (or bind that to the mouse click, so it speeds up whenever you are holding the click outside the drawing sequence!)
Changing the whole engine's timescale definitely sounds re-usable, we'll consider it for the next jams