Maarten's Crucial Conflict is for version 1.4/1.5. It has 3 levels and the file is 537KB in size. The file name is mcpp.zip. It was released on January 25, 2001.

Maarten's Crucial Conflict has very good level design and gameplay with a nice level of detail. Most of the monitors give feedback when you activate switchs and there are ladders you can climb. There is enough health and ammo to make it through the levels if you are careful. Level 1 is a base style level that you need to take back from the aliens. Level 2 starts off with you crash landing on a island base. You will need to activate the lighthouses and radio for a ship to pick you up. Then it's on to the secret smugglers hideout that was also taken over by aliens. Level 3 starts in a warehouse. You need to gain access to a spaceship that will take you to the source of the invasion. I rate this TC as very good with 4 out of 5 stars.