Google Silent Steel I've enjoyed it very much. It has multi paths and endings. Almost unlimited game play. And had a good review. There's a
name for the genre of this game but I went blank.
It's not new but kinda ahead of it's time I think. And it's availble on ebay and maybe SubSim. Try to get it from SubSim first. That is if it sounds like something that might interest you.
Lots of choices
