Basically for those who dont know spawning allows a player to use one “game disc” to spawn in a second player who doesn’t own the game. It was hugely popular during the early days of Warcraft 2 and allowed people to play together via battlenet. The cd:s owner had the full version and the spawn where only able to play in games hosted with cd:key owner.
So could you make that happen? or just give dl link to spawn installer?