Take a look at this Nadester. Acknex Unlimited click on the models button.

At the very top there is a Battle Rifle from Halo2 with a free license.

If you scroll down a bit you will see a Doom3 pack.
The license is set to free. I have been having to tell many people that they can't use them in their games that they intend to sell.

Scroll down some more. There is a Halo pack with a Limmited license.
And also farther down the list there is a Warthog for Halo with a Free license.

There are also a bunch of other models from other games that have a "free" license on Acknex Unlimited.

Pretty confusing to all of these people if you ask me.
I think that we should have all models from other games license changed to "Limited" on Acknex Unlimited.