Great point mom. However, the do need to adjust somewhere. Like a mole would live under ground, but a starr fish and nautalis would live in water...we could use a water level so what if like zombie farm the treeworld moved to an exspanded base with water pools for water critters and under ground cavern for under ground critters and a tree segment for tree critters...kind of like haveing diff worlds but on same map. this would eleminate over crowding on branches and give more exspantion to treeworld. it would mean more work to collect but it would be not as monotonous as just scrolling and then we would be able to "design" the area to be sutable for our critters to produce more food and gems as yyou exspand and make them happy. This would also allow room for the critter fighting den that some has suggested and an exspanded reg den for holding critters.