Completed a level.
Practice makes perfect.
Save a custom level
Bonk a sheep
Explode a sheep
Bonk a pigeon
Explode a pigeon
Bonk a duck
Explode a duck
Bonk every animal
Explode every animal
Bonk 15 animals
Explode 15 animals
Place 100 tracks
Place 1000 tracks
Destroy 100 tracks
Turn 100 junctions
Delay 50 trains