This is a project I worked on with my friend Pior for Dota 2. We decided it would be fun to make custom creeps, and went through the process of designing and then building them to function properly within the game. It took a lot of iteration and testing, but eventually we got it all to work.
Check out all the delicious conceptual work Pior did here: https://www.artstation.com/artwork/mqdmPv
If you like, you can view them here: http://steamcommunity.com/sharedfiles/filedetails/?id=1111669727