Portal 2 Interactive Gels

By Andrew Liszewski I'm assuming until recently these small tins of the interactive gels that were so vital to completing Portal 2 were only available in the Aperture Science gift shop. But since the company seems to have fallen on hard times as of late, you can now get them from ThinkGeek instead. All three varieties are available including the bue Repulsion Gel, the white Conversion Gel (