8 at least.
But even before Covid theater shooters have changed everything for me in a big way. It's impossible for me to not think about the possibility even a tiny bit whenever I've been in one over the past several years. What a shame if this experience dies forever, it used to be so much fun.
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Bone Appetit, my skeleton Metroidvania!
https://store.steampowered.com/app/1256520