Cheats for Portal: Prelude (PC)

All commands are done via the console. 
They must be enabled via the console option on shortcut, 
or enabled through the in-game options under the Advanced 
section of Controls. It is then accessed by pressing [~] 
(Note: Most of these require sv_cheats to be set to 1.)

change_portalgun_linkage_id [0-3] - Allow separate sets of portals 2B created
ent_create_portal_weight_box      - Spawn Weighted Storage Cube
fire_energy_ball                  - Fire an energy ball 
sv_portal_placement_never_bump 1  - Portal placement cannot be bumped
sv_portal_placement_never_fail 1  - Portals can be placed on almost any surface
upgrade_portalgun                 - Allow use of second portal placement
npc_create npc_citizen            - Spawn citizen            
npc_create npc_breen              - Spawn Breen              
npc_create npc_zombie             - Spawn zombie             
ent_create_portal_metal_sphere    - Spawn Bouncy metal ball  
give weapon_portalgun             - Basic portal gun         
view firstperson                  - First person             
view thirdperson                  - Third person             
impulse 101                       - All weapons, including those from HalfLife2
god                               - Invincibility                
noclip                            - No clipping mode             
sv_cheats 0                       - Disable cheat mode           
sv_bonus_map_complete 1           - All challenges completed     
buddha                            - Take damage but cannot die   
sv_gravity [number]               - Set gravity; "600" is default
npc_create npc_headcrab           - Spawn live Headcrab          
npc_create npc_barnacle           - Spawn Barnacle               
npc_create npc_combine_s          - Spawn Combine Soldier        
npc_create npc_gman               - Spawn Gman with suitcase     
npc_create npc_alyx               - Spawn Alyx                   
npc_portal_turret_floor           - Spawn standing turret        
npc_create npc_metropolice        - Spawn Metro policeman        
host_timescale                    - Set game speed; default is "1"
notarget                          - Turrets do not shoot at you
ch_createairboat                  - Spawn an airboat
ent_fire npc_rocket_turret toggle - Toggle rocket turrets
ent_fire !picker skin 1           - Turn targeted storage cube into a companion
npc_create_aimed npc_rocket_turret - Spawn a rocket turret                        

Alternate title screen:
Successfully complete the game to see the party room in disarray and partially
on fire with search lasers from missile turrets sweeping around.
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