Hello and welcome to the Customer Support sub-forum!
Here are a few tips to ensure that we'll be able to help you as efficiently as possible.

First of all before creating a topic here you should try performing the following troubleshooting steps:

1) Verify the integrity of the game cache. This can be done by right clicking on Rise of the Triad in your Steam library and then going to Properties -> Local Files -> and clicking on Verify Integrity of Game Cache.
2) Completely exit Steam and open it again.
3) If you have a fast internet connection you can try re-installing the game and then performing another verification of the game cache.

If you've performed these steps and the game's still not working for you then it's time to make a new topic.

IMPORTANT: You should avoid making posts such as "help the game isn't working" without providing any information. We will not be able to assist you unless you provide us with details to what's going on.

Please include the following information in your post:

1) Provide us with as much information as possible about the problem you're having.
2) Remember to include your system specs.
3) Include your current graphics card driver version
4) If you've been asked to provide logs you will have to make a small .ini tweak first. To do this you'll have to navigate to \Documents\my games\Rise Of The Triad\ROTTGame\Config and locate the ROTTEngine.ini file. After opening this file you will have to find all lines with "Suppress=" in them and add a semicolon (;) before it. This needs to be done to every single Suppress line.
You can click here [i.imgur.com] to see an example of a correctly modified ROTTEngine.ini file.