For the older alphas you have to run them from the exe directly, not through the play button (and not a steam desktop link). Find the exe in the game folder and click that, or make a shortcut to it for your desktop for convenience.
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For the older alphas you have to run them from the exe directly, not through the play button. Find the exe in the game folder and click that, or make a shortcut to it for your desktop for convenience.