Portal: Still Alive was announced as an exclusive Xbox Live Arcade game at the 2008 E3 convention, and was released on October 22, 2008.It features the original game, 14 new challenges, and new achievements.The additional content was based on levels from the map pack Portal: The Flash Version created by We Create Stuff and contains no additional story-related levels.According to Valve spokesman Doug Lombardi, Microsoft had previously rejected Portal on the platform due to its large size.Portal: Still Alive was well received by reviewers.1UP.com's Andrew Hayward stated that, with the easier access and lower cost than paying for The Orange Box, Portal is now "stronger than ever".IGN editor Cam Shea ranked it fifth on his top 10 list of Xbox Live Arcade games. He stated that it was debatable whether an owner of The Orange Box should purchase this, as its added levels do not add to the plot. However, he praised the quality of the new maps included in the game. The game ranked 7th in a later list of top Xbox Box Live titles compiled by IGN's staff in September 2010.