Yes It does :)
How does it autosave
There is no Autosave in Pokemon Emerald.
Games with autosave mean that they will automatically save at certain points. You can usually still save manually if the game has autosave enabled.
Portal or Portal 2 mods on Steam is installed by first Downloading it and extracting it. Then copy the map file into your Portal 2 maps folder which is Run the game.
Yes and Portal 2.
No, Portal is for PC only. Portal 2 is for PS3,Xbox 360,and PC. Plus it would suck on PSP.
Portal - 2002 Portal 2-21 was released on: USA: 18 November 2003
Portal 2
its from the game portal and portal 2
Wait for Portal 2.
It will be on Mac the day Portal 2 is released.