Portal Codes
These cheats are enabled via the console option on shortcut or through the in-game options under the Advanced section of Controls. During gameplay press the '~' (tilde) key to bring up the cheat console and enter Type sv_cheats 1 to enable cheat mode.
Lets Separate Sets of Portals be Created:
Enter 'change_portalgun_linkage_id # (0, 1, 2, 3)'.
Put Portals on any Surface:
Enter 'sv_portal_placement_never_fail # (1 or 0)'.
Solve Puzzles by Firing an Energy Ball:
Enter 'fire_energy_ball'.
Lets you use a second Portal Placement:
Enter 'upgrade_portalgun'.
Create a Weighted Storage Cube:
Enter 'ent_create_portal_weight_box'.
We have more cheats and tips for this game here, The Orange Box cheats
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