wtf why it mess up on my brick?

[master king deaddude]

blender picture

in-game picture

It ceiling fan blb like a interactive how I fix this?

[Ad Bot]

[Night_Hawk]

Hit N while your mouse is hovering over the 3d view, Scroll down to shading drop down menu, and check Back face Cultivating. See what faces are screwed up

[Demian]

Hit N while your mouse is hovering over the 3d view, Scroll down to shading drop down menu, and check Backface Culling. See what faces are screwed up

Fixed + Then select those faces in face select mode (CTRL + Tab) and press W > Flip normals to fix them.

[Zeblote]

Fixed + Then select those faces in face select mode (CTRL + Tab) and press W > Flip normals to fix them.

No, select all faces and hit Ctrl N to for "Make Normals Consistent"

[master king deaddude]

also

Im testing a new brick it ceiling fan motor housing and I noticed it 2x2 brick
  How I change to 1x1 brick?

[master king deaddude]

....

[Peejster]

What's the problem with your brick? What are you trying to fix?
Help us out here.