What program have you used for that?
I'm creating 3D models as well and I'd like to know what is the most suitable program for doing stuff like you did.

Autodesk 3ds Max

Alright. Nice. Thanks. I just started to work in 3ds Max recently. The wardrobe was made in AutoCAD. :)
Ok, thanks

I dont shit about this, but is all graphic in games made out of triangles? I have seen some high res mods that says they add triangles. I am highly curious as to how this sorcery works

wait, i know you.
you make new weapons for fallout NV.

Do companies actually use models with numbers that high for stuff? Got any examples? Very curious.

Well they not use them in high poly, for example: name any character you like of this generation and in the game may look bad of need more polygons but when that char was created they made a high poly model and for the game use a low poly model, added texture with shadows, folds if he/she is wearring clothes and other stuff, then with a second texture called normals, they added the "depth" in the folds, holes or buttons.
So what you are seeing is just a low poly model with effects.

Gears of war, halo, crysis, skyrim and other games that you may think that have a lot of polygons are just low poly model with good textures.

<--- this is a poor example but it show what I'm saying, a very low poly model with a texture that already have the cracks and stuff like that