このゲームを走った時、無慈悲するのは誰だと思う?user74914853だ。動画中に出てきたURL https://assetstore.unity.com/https://store.steampowered.com/app/735840/Retro_Space_Shooter/https://jp.automaton.am/articles/newsjp/20170927-55176/
http://www.nicovideo.jp/watch/sm33927892