Flash Projector: "Invalid SWF file name" when trying to open https

I had the same problem. The projector doesn't appear to accept https urls as parameters (I guess only the Linux version, since quite a few people use the projector to play the game and nobody else seems to have reported this issue).

Given that flash is now officially EOL and the Linux version of the projector hasn't been updated in a thousand years, the odds of this annoying bug being fixed now are pretty much nil.

I worked around this by downloading the swf file and opening the local file. I had to log back into the game and redo all my settings, but only once.

I have a script which automates downloading the latest file and running it:

#!/bin/bash

wget https://www.realmofthemadgod.com/client -O rotmg.swf

flashplayer rotmg.swf

rm rotmg.swf

(I remove the file at the end to make sure that I never play using an old version.)

I've saved that as a file called rotmg in my ~/bin and made it executable. This assumes that flashplayer is also on the path (I also have it in my ~/bin).

I also made a file called rotmg.desktop and put it in my .local/share/applications/ to get a menu entry (works for any environment that uses the XDG menu standard):

[Desktop Entry]

Version=1.0

Encoding=UTF-8

Type=Application

Name=Realm of the Mad God

Exec=rotmg

Icon=/FULL/PATH/TO/FAVICON/I/DOWNLOADED.png

Categories=Game;