Bad Piggies Level 1-21
This page contains the solution of level 1-21 in episode 1 (Ground Hog Day) from the popular iOS and Android game Bad Piggies. Below you can find a walkthrough for building the right contraptions needed to earn all 3 stars.
Start by building a regular cart with 3 wooden crates. Then put the pig in the middle, a engine on the right and a fan on the outside. Start playing and turn on the fans. This will get you to the finish right in time! Next, move the left wheel to the middle and remove the left wooden box. Start playing again and simply wait again after you turn on the fan. Feel free to add a comment when you've got a different strategy.