You need to open it in a browser to actually download it though.
![sonic unleashed steam sonic unleashed steam](https://pbs.twimg.com/media/D19rIHZX0AER6rB.jpg)
If you have issues with the HMM you can try SonicGMI.
SONIC UNLEASHED STEAM INSTALL
![sonic unleashed steam sonic unleashed steam](https://4.bp.blogspot.com/-YhiMGxnsS38/TxojHaoWVSI/AAAAAAAADBM/YxGEbpZzY4Y/s1600/sonic.freegamespopular.blogspot.com.png)
Download the latest release of the HMM (HedgeModManager), by clicking on HedgeModManager.zip (in Assests).