Bad Piggies Flight in the Night Level 4-27 can be three starred using a two contraptions. To beat the clock, a miniscule 8 seconds, create a “plus”-shaped contraption with soda bottles aiming left to get rightward propulsion. Use one pair to move toward the gap, pop some balloons, then aim for the right side of the TNT to blast rightward. For the star box, move the vertical bottles a notch to the right and drift over the birds. It’s a slow process, but worthwhile if you grab the box.
If you have a different strategy for completing this level feel free to leave a comment below.