I tried to make another game in Unity - something like pipes game (rotating pipes in order to connect all ends)... the main problem and no result was because of little motivation and big problems with ferrofluid.
For now problems with fluid is still here, but motivation increased because of Defold community (forum and twitter) and that is what is VERY IMPORTANT for me in gamedev. Moreover I like the build size and that it is no intro with ide logo (who really needs will simply get in which ide the game was done). Frame to frame animation is very nice in Defold and simple.
The only thing I miss in Defold - no opportunity to move and rotate scene.