Inversion +

Inversion
Inversion is a cover-based third-person shooter video game, developed by Saber Interactive and published by Namco Bandai Games for Microsoft Windows, PlayStation 3 and Xbox 360. It was released on June 5, 2012 in North America and on July 13, 2012 in Europe for PlayStation 3 and Xbox 360 and July 27, 2012 for Microsoft Windows. It features destructible environments and gravity manipulation.
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expired [Steam] Inversion + Enslaved Pack - $7.49 ($2.49 with $5 Amazon Promotion Credit)

Just a heads up, apparently the Inversion keys are region locked so you might have to use VPN to activate it. I ended up buying it anyway. Couldn't say no to Enslaved at that price.

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Inversion (PC Game) Only $5.00 + $4.90 Shipping @ MightyApe.com.au!

expired Inversion (PC Game) Only $5.00 + $4.90 Shipping @ MightyApe.com.au!

INVERSION is a third-person co-op shooter that combines hard-hitting, adrenaline-pumping action with a revolutionary gravity manipulation engine.