To find and install new mods, Go to this site.
How do I install Sonic Adventure DX mods? Sadly there is no way to make it fullscreen in hd. The only way to get rid of the borders of that game is to go to settings>display settings> and lower the resolution to 480i or whatever the lowest resolution is for your tv. How do I make Sonic Adventure DX full screen? Please join the Steam group and/or sign up for email updates to be notified when BetterSADX is updated. During install, you will be given 2 options: Download the latest version from Google Drive here.