Stencyl is good for 2d games, But is almost useless for anything 3d. For 3d games you usualy have to use an engine built specifically for it, Usualy unity, but I have found far better luck with Unreal engine 4, which has an oddly similar setup to stencyl. This is for all the people still looking to do 3d, just pick up blender and unreal and build to your hearts content.