portal or portal 2?

mods

where are the turrets?

Portal starts to open and then crashes (Along with other games using source engine)

is portal fun

Test Chamber 17 bugged

i copmleted test chamber 15 with only 12 portals! !!!!!!!

help on chamber 17?

achievement error

ошибка достижений

umm camera bug?

Portal Hammer Help?

help with achievement

transmission recieved doesnt work