Install OpenRA (Command & Conquer Red Alert) under Ubuntu

sudo snap install openra

sudo snap connect openra:removable-media
 
sudo apt install unrar
 
sudo mkdir /media/openra
 
# C&C
wget https://files.cncnz.com/cc1_tiberian_dawn/full_game/GDI95.zip -q -P /tmp
wget https://files.cncnz.com/cc1_tiberian_dawn/full_game/NOD95.zip -q -P /tmp
wget https://files.cncnz.com/cc1_tiberian_dawn/full_game/CovertOps_ISO.zip -q -P /tmp
 
unzip /tmp/GDI95.zip -d /tmp/
unzip /tmp/NOD95.zip -d /tmp/
unzip /tmp/CovertOps_ISO.zip -d /tmp/
 
sudo mount /tmp/GDI95.iso /media/openra
 
openra.cnc
 
# Manage Content > Detect Disc or Installation > Select content > Continue
 
sudo umount /media/openra
sudo mount /tmp/NOD95.iso /media/openra
 
# Detect Disc or Installation > Select content > Continue
 
sudo umount /media/openra
sudo mount /tmp/covert.iso /media/openra
 
# Detect Disc or Installation > Select content > Continue
 
sudo umount /media/openra

wget https://files.cncnz.com/red_alert/full_game/RedAlert1_AlliedDisc.rar -qP /tmp/
wget https://files.cncnz.com/red_alert/full_game/RedAlert1_SovietDisc.rar -qP /tmp/
 
unrar x /tmp/RedAlert1_AlliedDisc.rar /tmp/
unrar x /tmp/RedAlert1_SovietDisc.rar /tmp/
 
sudo mount  /tmp/RedAlert1_AlliedDisc/RedAlert1_AlliedDisc/CD1_ALLIED_DISC.ISO /media/openra
 
opnera.ra
Manage Content > Detect Disc or Installation
 
sudo umount /media/openra
sudo mount  /tmp/RedAlert1_SovietDisc/RedAlert1_SovietDisc/CD2_SOVIET_DISC.ISO /media/openra
 
Retry
 
sudo umount /media/openra
 
rm -r /media/openra
rm -r /tmp/RedAlert1_*