Portal: Still Alive
Portal: Still Alive is a 2008 Xbox Live Arcade re-release of 
Portal featuring additional levels based on Portal: The Flash Version, different achievements from other versions of the game, and online leaderboards. It is branched off of the original Orange Box version of the game, making use of the same internal file formats and UI. Small code changes and additions have been made to support the new content and a few bugs were fixed. None of these changes made it back to the PC version or any later ports of the game.
Due to the shutdown of the Xbox 360 Marketplace, it can no longer be purchased directly on an Xbox 360 console, but is still available for purchase on newer Xbox consoles and playable via backwards compatibility. The game is rendered at 4K on Xbox One X and Xbox Series X.
No "true" port of Portal: Still Alive to any other platform currently exists. 
Portal Companion Collection includes the bonus levels, but it lacks the new achievements and is otherwise based on the PC version of Portal circa 2021 (with the old Xbox UI re-enabled). An unofficial PC port has also been created, but similarly lacks the new achievements and alters the maps in various minor ways.
Differences from original Portal
- Added 14 new bonus levels based on Portal: The Flash Version, including challenge mode.
- Replaced the original game's achievements with a set of 12 new achievements.
- Added global leaderboards, tracking players' best time, portal, and step scores for the full game.
- Added challenge mode to the advanced chambers. The original game already featured both of these, but they were previously mutually exclusive.
- The game has a trial/demo mode, something which previously only existed on PC (as Portal: First Slice).
- The trial stops at the end of chamber 11, whereas First Slice stops at the end of chamber 10. The first bonus chamber can also be played.
- Trial mode disables all saving, including settings and chapter unlock progress.
- When the player reaches the end of the trial, an upsell screen is displayed; First Slice simply kicks the player to the menu and opens Portal's Steam store page.
- Added two unlockable Xbox Gamerpics, depicting the companion cube (obtained from incinerating the companion cube) and the cake (obtained from beating the game).
Internal
- Added a new entity: logic_title_unlock_test, used to check if the game is running in trial mode.
- Added
OnPlayerStartedGameandOnPlayerBeatGameinputs to logic_playerproxy, used to start and end full-game leaderboard stat tracking. - Added support for opening sub-menus of the main menu in GameUI.
- Trial mode does not internally restrict what maps can be loaded, unlike in First Slice. Due to the fact that Xbox Live Arcade trials are actually just the full game with restricted functionality, this makes it possible to play the entire game in trial mode by using out-of-bounds glitches to skip the point where the trial normally cuts off.
- Added commands
x360_award_cube_gamerpicandx360_award_cake_gamerpic, run via point_clientcommand to award the respective gamerpics.
Bug fixes
- Reloading a save during the credits no longer causes them to turn into HL2-style scrolling credits.
See also
External links
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