Looking for something to play this Halloween? Then you're in luck! Eidos Interactive has just announced that they'll be releasing a Tomb Raider: Underworld demo on Friday, October 31st. The demo will allow you to play through some of the early Thailand missions, where you'll have to "master steep coastal cliffs, navigate perilous and crumbling ruins, evade vicious wild animals and use state-of-the-art gear such as the grapple or the new Field Assistance System to create and uncover paths that will take players deep into the challenging wilds of Thailand." Check back on Friday for some mirrors!