FREE to owners of any of my Tunnel Packs.
There are two animated doors that may be placed in the wall model available as a separate item (also a free upgrade of you have any of the Tunnel Packs). One is a normal open/shut door and the other a sliding metal one with a sound not unlike the metal door in Texas Chainsaw Massacre (not the same though). Sound file included. They can be used as a barrier, a puzzle or simply a door using the GameGuru LUA scripting system. Very low poly count.
If you own any of my Tunnel Packs please just upgrade via the GameGuru File/Download Store Items system.
In Store awaiting approval at time of this post.