The wargames made by AGEOD are a mixed bag, some are regarded quite well (like their original American Civil War game), but one title that everyone agrees is a real stinker is their 19th Century game Pride of Nations. Even the developers have acknowledged that they screwed up with this game by trying to shoehorn a global grand strategy game with economics and politics and colonisation into an engine that was originally designed to simulate limited, 18th century operational warfare.
The game lasts from 1850 to 1920 and is played in 2 week increments - that's over 1800 turns with turn processing time taking up to several minutes to complete. The pace of the game is glacially slow, has an obtuse interface and will often require the player to write their own scripts to iron out bugs or AI problems that crop up from time to time.
But, for all that, I love the game to pieces and have been playing it regularly for years. If you're at all interested in 19th century history, then this game has it all - no corner of the 19th century world is left untouched - from the French skirmishes with the Tukulor nation in the Western Sahara to the 2nd Anglo-Burmese War, to Commodore Perry's Black Ships in Japan. The game is just chock full of little historical moments that you can tinker with and experience. Plus the game also comes with smaller, discreet operational scenarios that you will not find anywhere else like the Indian Mutiny and the Boer War. To their credit, the developers are still patching the game, 6 years after it was released. It's often on sale on Steam for a just a few bucks and I would recommend anyone with a passing interest in the period check it out.