A few co-workers recently succumbed to peer pressure and got around to playing Portal. There has been much quoting of GLaDOS and xkcd recently as a result. I loved playing the game and many user-created maps. So for those who have tackled the Advanced Chambers and still want more, I’ve put together a list of my favorites. (I won’t link directly; you will probably find them all on both My Aperture Labs and Thinking With Portals but I’m not confident about either site’s permalinks.) My tastes in brief: I tend to like puzzles and neat uses of physics; I’m really not very skillful and if much dexterity is required then I want reassurance that I’m not wasting my time. I’ve already previously praised the huge, wonderful conversion Portal: The Flash Version. Others that suit my tastes, in vaguelly descending order: *UPDATE* Marf Aperture by MasterMarf (may be the best one yet!) LoveGLaDos by Graxthal (gated right at the start - see my note on crouching, below) Weighted Companion Cube Map by... - Anthony Bailey