One more thought: It might be good to put the world/level at the top of the screen as well, since currently it is very easy to lose track of how far you progressed already. Just a 1-2 (world 1, level 2) or something?
Also, the game just crashed on my with an error: "HUD_FX_Scale
The specified object does not exist". world 1, level 4. At the very end of the time, I heard the "Oh no, these bubbles are toxic!" sample, and bumped into a bubble at the same time, resulting in the error. Don't know if it's makes a difference, but I had the mirror image extra thingey follow me at the time.
Also, the game just crashed on my with an error: "HUD_FX_Scale
The specified object does not exist". world 1, level 4. At the very end of the time, I heard the "Oh no, these bubbles are toxic!" sample, and bumped into a bubble at the same time, resulting in the error. Don't know if it's makes a difference, but I had the mirror image extra thingey follow me at the time.