You're looking for information on how to download Sonic Generations on PC from the Internet Archive. Here's what I found:
Please note that availability and compatibility may vary depending on your region and device. Sonic Generations Pc Download Internet Archive -BEST
Although the Internet Archive has a vast collection of classic games, Sonic Generations is a relatively modern game (released in 2011) and may not be available on the platform due to copyright or licensing restrictions. You're looking for information on how to download