neat little game
some thoughts:
animations and sprites where good
the up/down moving platforms could be faster
i liked the little bit of text when you interacted with the terminals
the double jump doesn't work when going downwards because it doesn't reset the gravity
the snails and birds where fun
i think some music could've added quite a bit
maybe i should have worded it better
when your jumping off the ground your y_velocity (how much your y coordinate changes per frame) is 0
when your in the air its no 0 because your moving up or down which messes up the double jump
so your code when jump is pressed might look like:
y_velocity = y_velocity + jump_velocity
when it should just be:
y_velocity = jump_velocity
