You can rip your own copy of Forza Horizon 1 from a disc you own into an ISO file. Then, using the emulator (available on GitHub), you can play the game on PC. This requires a powerful gaming PC (at least an Intel i7 and a GTX 1070) because emulation is demanding. Even then, some users report graphical glitches and audio stutters.
Assuming you're aware of the potential risks and still want to proceed, here's a step-by-step guide: forza horizon 1 download apunkagames
or 5: Both are natively built for PC, available on Steam and Xbox Game Pass , and offer significantly better graphics and online features. You can rip your own copy of Forza
Even if you ignore the legal issues, downloading from sites like Apunkagames poses significant risks. Here is what you are actually inviting onto your computer. Even then, some users report graphical glitches and
However, for Forza Horizon 1 specifically , the risk is not worth the reward because the game was never a native PC application. You are essentially downloading an emulator that someone else configured, which may contain custom malware.