Widescreen Fix 2021 | Heroes 5

If you must play the standalone base game, you can manually force your resolution, though the UI will appear stretched. Resolution help???? - Heroes of Might & Magic V

Yes, but with a caveat. For 2560x1080 or 3440x1440 monitors, the HD Mod 2021 build worked wonders. However, the (the flying camera around the castle) would often show the "void" outside the castle walls because the game was never designed to see that far out. heroes 5 widescreen fix 2021

The most effective way to play the original campaigns in widescreen is to port them into the engine, which supports 16:9 natively. If you must play the standalone base game,