Gray World When Started

Hello, I was working on an apartment scene for a video game last night, when I saved and pressed P to start it and see how it was going. When I pressed it everything went gray except for one plane. The collision of all the other meshes are the because I can use the sole plane as a 3D cursor to see where I am and I stop where the walls would be.

I just tried too upload the blend file and it didn’t work soooooo :confused:

be sure that your 3D viewport display mode is the “Textured” one ( the little red squared sphere icon).