这样一来，需要版本的游戏就安装好啦~
参考： https://docs.google.com/document/d/1TuT3XcwbLWSBFhHXtfM8tfqmGJ5FHqpO1ggYJIcS3Zs/edit https://steamcommunity.com/sharedfiles/filedetails/?id=890033077 https://www.reddit.com/r/Steam/comments/611h5e/guide_how_to_download_older_versions_of_a_game_on/ https://www.3dmgame.com/gl/3751672.html https://docs.google.com/document/d/1FiIGJLTUokXckX2KnrxlOQAeujiYsSaggKfVp0hgAwk/edit
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