How to implement several VPNs separately for each program?

Question

VPN

The task, there is a game, uses a UDP connection, the use of a proxy is no longer needed.
How to run multiple copies of the game and each set its own VPN?

Answer 1

virtual machines. if the iron pulls, of course
, well, or several physical machines ....

Answer 2

If you run copies within the same OS, I would install a firewall on the same OS and destroy them