Hi,
Thanks Zombeaver for the input. I did not go with your suggestion. For Aliens extermination I only have a virtualbox image with Windows Xp and the game installed on it.
Since we all have to stay home, I came back to give it another try. I managed to do it.
First I went into Virtualbox manager, I selected my virtual machine, right-clicked on it and created a shortcut on desktop.
I put that shortcut in a dedicated folder for emulators and roms.
I added the game in my wanted platform, then in game properties :
- in launcher, application path, choose the shortcut file. If wanted, add --fullscreen command line
- in emulation, untick "use emulator for this game"
I'm not sure for the option names because I am using these applications in French.