not really that hard, however, the consistency is a real pain in the ass. for example, I make one bridge, test it, and it stays up fine. Then I make a second bridge on the same map, they are not touching, and all of a sudden, the second bridge collapses instantly. Delete the new bridge, and the original one stays up.
 "Cargo Bridge"){kind=icon}
 "Exorbis 2"){kind=icon}
 "Factory Balls"){kind=icon}
 "Take Something Literally"){kind=icon}
 "Sonny"){kind=icon}
 "Chronotron"){kind=icon}
 "Epic Battle Fantasy 2"){kind=icon}
 "Canabalt"){kind=icon}
 "Papa's Pizzeria"){kind=icon}
 "Z-Rox"){kind=icon}
 "Ragdoll Avalanche 2"){kind=icon}
 "Amorphous+"){kind=icon}
 "Pandemic: American Swine"){kind=icon}
 "Globetrotter XL"){kind=icon}
 "Fancy Pants Adventure: World 2"){kind=icon}