It´s a Mappack. UFO:Enemy Unknown (europe name) MapModules baesed on the classic "X-Com Ufo Defends" for Freedoom Phase 2, i called it "UFO-UE".
The Mod is working Standalone with GZDoom v.310a + Freedoom2.wad + brutalv20b_R.pk3. All in the Download.
This mod is not endet, because i have forgotten to writing that the next Episode of my UFODoom mod will be more action, more Missions in Citys and some new Missions like Terror-Patrol (Search and Destroy)