Camera slides down on ramps / Can't walk over tiny objects

Case 1: Your scene gravity in "Y" coordinates is too high.

Solution: Add an event to set the physics of the scene.

Case 2: Your scene scale is to small

Solution: In the 3D editor make your scene scale bigger. Also after that, you will have to change the ellipsoid camera to the new size because not you will walk by the scene on a tiny perspective like a smurf. You can do it in your 3D editor or in C2:

(Note: Depending of your scale you will have to edit to fit with your needs than can be Y=2, Y=10, X=4 or whatever)

I "Set receive shadows" and "cast shadows" on mesh but nothing happens

Case 1: The light not have any targeted mesh on "Shadow Properties"

Solution: Remember that you have to add the mesh objects tha will cas shadow here separated by commas like: Cube,Sphere,Wall,etc...

Case 2: The object have alpha 0 on materials or textures.

Solution: Find the alpha property on the 3D editors you're using and set to 1.0 or the opacity you want the shadows be.

Case 3: Too many lights or one with too much energy.

Solution: Remove some light or decrease the energy/intensity of the lights.