If your character falls through the floor.

1. Check if your character is above the level of the floor, if the character is intersecting with the ground, normally they will drop through and fall.

2. Check your character has a colider

3. Check if your landscape:ie the floor your character walks on has a colider

   If Your landscape has been imported from a 3D package ie: maya or max etc. Look at the hierarchy and find the model. for example landscape. look at the properties and select generate coliders then go to apply. You may have to delete the landscape from the scene and re-drag it from the hierarchy for any changes to be made.

4. If your character still falls through the ground it's probably the capsule colider on the character, try inputting a standard FPS controller or third person controller and see what happens with them. If they do function correctly then it is something to do with your character try re-importing the file and add the appropriate physics to see if it works.

Tip: Dont use a mesh collider very high usage of the cpu. Use a casual colider and ensure the character is inside of the green area.

Hi, mine was because I had a funky Javascript code attached to my character. Well at least I figured it out.

I had that happen because I attached a JavaScript code to it. I figured it out from the increment for the motion.

Verify that Is Trigger is enabled, if you turn off, at least if you have no script you can use this option

I'm having issues with the ThirdPersonController script. It seems to work fine with the default model included, but when adding it to an imported model (human_male in the asset store), the character's placement is slightly lower than the floor. The CharacterController capsule is exactly the size of my character mesh, and all colliders in the scene are set up correctly. Any ideas???