You can technically play Forza Horizon 5 for "free" through GeForce NOW .
You get the full, official game with online multiplayer support and the ability to earn achievements. 2. Free-to-Play Weekends
During these events, the full game is open to everyone for a limited time (usually 3-4 days).
Playground Games and Steam occasionally host "Free Play Weekends".
Forza Horizon 5 is included in the standard PC Game Pass library.