u can no longer donate VIA Kickstarter, but u can still donate using Paypal:
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If u donate $15 u can get a DRM-Free of Steam copy of the Digital PC, Linux, of Mac Key.
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If u donate $15 u can get the PSVita of PS4 Version.
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If u donate $15 u can get a Wii U Version.
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If u donate $15, u get the Digital Soundtrack.
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