I just woke up with the idea, though inspired by Team Fortress 2 Classic, especially the idea of Mercenaries being the common enemies in some of the stories. Fortress is a stand alone mod game idea based on the lore of Team Fortress 2, like how such games as Half-Life: Before or Portal Stories: Mel are mods of Half-Life and Portal but seperate. Unlike TF2 and TF2C, the game is a single player game and like Half-Life and Portal, concentrates on the world of Team Fortress. This is why I believe it's better off as a stand alone game and not simply a mod gamemode for Team Fortress 2 or TF2Classic, because these games are online multiplaying games as expected. For example instead of choosing RED or BLU, you choose one of the nine mercenaries, or maybe a list of stories about the nine mercenaries or additional characters that you could perhaps play as, such as Ms. Pauling, Saxton Hale or the TFClassic mercenaries. Each character has a list of stories to choose from which consist of a series of maps that are played through like Half-Life and Portal. Some maps may still have TF2 like objectives but purely for the sake of stories. For example when you reach the end point of one map it will insteantly load the other as smoothly as it can to give the impression of transition and travel. So far stories I have in mind are: Before Mikhail was Heavy Weapons Guy, how he escaped from the Gulug with his family. Ms. Pauling assigning certain BLU mercs rescue missions, such as saving kidnapped tream mates. After being rejected by the military, the Soldiers own "Call of Duty" through Europe before being told the war ended in 1949. TF2 game modes from a story perspective. Such as intelligence retrieving and cap defending. Ms. Pauling herself doing jobs for the administrator. Why Scout chose to quit being some juvenile deliquint and joined RED/BLU Why TFClassic mercs left and how Team Red and Team Blue evolved into RED and BLU. The ancestor of Demoman, a knight who learned the alchemy of explosives from a wizard. Team Fortress 2 comics made into stories. Such as Shadow Boxers and the main comic series. (The same story can perhaps be played with a different mercenary from their perspective.) Theres no cosmetics or choice of hats and weapons since each story may provide all that for you as well as alternate skins depending on what the story is about. Also for the map making and modding community, of course be possible to make your own stories to add to it. Maybe certain fanfictions out there would be ideal for Fortress. Some stories may permit online campaign, but being a single player game can be played offline. I know Team Fortress 2 isn't all that good with NPCs (as far as bots go) which is why some NPC coding may need to be ported over from Half-Life 2, if it can be made to control Team Fortress based characters. I can imagine escourting Ms. Pauling like how Freeman escourts Alyx. So, good idea? I know breaks some traditions with Team Fortress, such as the big elephant of concentrating on individuality over team. If Fortress can't work as a stand alone mod, then if Team Fortress 2 gameplay is possible on GMod maybe better of there? I never seen TF2 gameplay on GMod so dunno if it's possible.