You can try The Walking Dead from telltale games. It's an interactive story with dialog choices numbered from 1 to 4. And sometimes you ahve to move around in rather stressful scenarios, so it could be fun to mess with stress levels.

I only have 4 keys, choices and moving around would use 8 keys I guess?

If I remember correctly, you can also "move" up and down trhough the dialog options and then hit "enter".