Not sure if the maker of the game can help or not, but the install was fine but nothing is happening when I double click the application... it just sits in the background and doesn't open. This isn't the only game that is doing this btw. Any help of any kind would be great. Thanks!

Hmmm that's a tough one really. The game is done in a rather old engine at this point so maybe something is simply incompatible, but it's a bit complicated to really figure out what could be the problem here. Maybe this thread might help? https://steamcommunity.com/discussions/forum/0/4652759797632489794/