| 21. | Health, energy, and mental balance can all be augmented through various researchable technologies and purchasable upgrades.
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| 22. | This is not something you can buy, what we have scientifically is not purchasable on the open market,
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| 23. | The full package was offered free under the PUEL, with licenses for other commercial deployment purchasable from Oracle.
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| 24. | Purchasable upgrades, obtained using blue orbs collected in levels, also enable optional backtracking of previously completed levels.
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| 25. | Prior to 1906, shoe polish was not well known as a purchasable product, nor was it particularly sophisticated.
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| 26. | Pleasant Company was founded in 1986 by Pleasant Rowland, and its products were originally purchasable by mail order only.
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| 27. | The mask was the inspiration behind the " Lacking Moral Fiber " purchasable hat in the game Team Fortress 2.
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| 28. | The Bonus Edition, only purchasable online, has a hard silver case with the title of the game on it.
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| 29. | The Eye of Skadi is a purchasable item in Dota 2, a real time action strategy game, by Valve Corporation.
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| 30. | The most recent purchasable edition of the game contains a printed copy of " Living Rulebook 1.0 ".
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