Strogg Universe is an unofficial expansion pack for Quake 4. It adds 15 new weapons and features to both singleplayer and multiplayer. In singleplayer you start on a map like you would on a multiplayer server. You have an objective to complete. There is a scoring system that carries over with each map and effects the game difficulty. Accomplishing an objective is worth 1000 points. Every map is setup as win or die. Each Strogg has a point value such as a tactical transfer is worth 10 points. Every second or so your score decreases a point depending on the skill level. There is no more game saving or checkpoints. When you die you respawn like you would in multiplayer but lose points. If your score falls below 0 points it's game over. The AI gets harder as you do better. Once you've gone over 10,000 points the game goes into nightmare mode and then if you die once it's game over.
I just uploaded a new installer that fixes the problems of the version released a couple days ago. I also uploaded some new videos to this site, and my youtube account has some others I couldn't upload here because moddb has a 600 meg video limit. here's one: Youtube.com