สมัครสมาชิกเพื่อดาวน์โหลด
Economizing (or: Portals Only!)

Cave Johnson here. Chariots chariots. The lab boys tell me that we're so low on funds at the moment that we literally cannot afford any testing materials other than the portal device itself, some panels, glass, and a few lights. Also, don't break anything, or it's coming out of your imaginary paycheck. Anyway, on with the test.