We strongly recommend that you buy the game so you can support the developershttps://store.steampowered.com/app/71340/Sonic_Generations_Collection/
WHAT IS SONIC GENERATIONS COLLECTION
Celebrate 20 years of Sonic in an all new adventure that delivers a definitive experience to Sonic fans new and old!
HOW DO I INSTALL SONIC GENERATIONS COLLECTION ?
1. Click the green UploadHub button and you should be redirected to the Download.
2. Once SONIC GENERATIONS COLLECTION is finished downloading, extract the .rar file. (You will need WinRar, you can get it here
3. Once its extracted, go into the games folder and right click the game and run it as administrator and Enjoy!