How to run the game in Flash
SBO game is made in Flash, a format unsupported by most browsers from now on.
Converting it into other langage/format would be far too big a task, for the time being.
So here's how to run it, if your browser don't allow the game to start properly :

1 - Download game archive (.zip or .rar usually) from latest patreon news posts.
2 - Extract/unpack itusing a free archive software like 7zip (https://www.7-zip.org/download.html) or other of your choice.
3 - Open/play the resulting .swf file using a flashplayer software ("flash projector" being the most official, versatile and appropriate solution here. Attached to this very post for various OS)
4 - You're good! Have fun!

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Precisions on ADOBE FLASH PROJECTOR :

Flash Projector is a standalone program that allows you to run Flash files (local or via urls) without the need of a browser.

Download 'flash projector.rar' archive attached, extract it (using 7zip), and use one of the flashplayers inside it, depending on your OS :
- For Windows : flashplayer_32_sa.exe
- For Mac :   flashplayer_32_sa.dmg
- For Linux : flash_player_sa_linux.x86_64.tar.gz

You can launch it on your computer, click 'file' then 'open', then select your local .swf file of the flash game you want to play.
And you're done!
Game should load and let you play smoothly from there ;)
Have fun!
(PS Thanks a TON to Lee, for this magnificent & elegant solution!)