If you are looking for the Stronghold Crusader Trainer 14 (often labeled "Extra Quality" on some download sites), you’re likely referring to the classic +14 Trainer by iNSANiTY
Unlike mods (which alter game files permanently), a trainer is a runtime executable. You launch it after the game, press specific hotkeys (like F1, F2, etc.), and instantly toggle features such as: stronghold crusader trainer 14 extra quality
"Extra Quality" is often a tag used by third-party hosting sites like GamePressure or Cheat Happens to indicate a version that works across multiple patches (like v1.0 and v1.1). If you are looking for the Stronghold Crusader
The Popularity Engine: It eliminated the "The people are leaving the castle" message forever by locking popularity at a perfect 100. A Tale of Two Kings Stronghold Crusader is still owned by Firefly Studios