Having already upped the ante in Portal challenges with Ren_Test2 in November, Bethesda's Daryl Brigner has returned with a new custom-made map aptly titled Ren_Test3. The download, available at TWHL, also includes Ren_Test 1 and 2 as well as Step, Time and Portal challenges for the maps.
We haven't had a chance to play it yet (such is the crazy, fast-paced life of a blogger), so tell us what you think in the comments below. Let's hope Valve finds a way to pool some of the best custom maps for Xbox 360 and PlayStation 3 owners, too.

This article was originally published on Joystiq.