Grab the colorful puzzle pieces and place them together to fill up the train cars.
Twist and turn the pipes to create a steady flow of green sludge.
Grab the colorful puzzle pieces and place them together to fill up the train cars.
Shuffle the letters and rack your brain for ingenious word combinations.
Pack puzzle pieces perfectly as you upgrade your fleet and unlock cities.
Twist and turn the pipes to create a steady flow of green sludge.