External download site is blocked in multiple countries.

It's working fine on my end.  Use uBlock Origin for MixDrop links.

You might have to click on the download button  a few times for it to finally give you the download.

To add some understanding. I can't afford to be throwing money into my projects. 

All of my games are completely non-profit. I make no money whatsoever.

Just to confirm from my end, the Mixdrop link works fine for me. (Linux/Windows (prototype))
I'm on Windows (I know, spare me please) - I have both NoScript and uBlock, I gave MixDrop temp script permissions and the download button worked fine for me first-time. Game is up and running, it's a fairly straightforward installation.