Ross MacFarlane offers a set of set of free wargames rules for the late 19th/ early 20th centuries called Sending MacDuff to the Front.
Modified Morschauser 19th Century Rules
Bob Cordery offers a set of Modified Morschauser 19th Century Rules. They’re based on the original set by Joseph Morschauser. It’s played on a gridded battlefield
Uniforms of Egypt 1820 – 1898
The New York Public Library has an online collection of color plates of Egyptian uniforms for the period 1820 – 1898. This should be a great reference for people interested in the Sudan and other North African campaigns in which Egyptians participated.
Satsuma Rebellion Game
The Satsuma Rebellion of Japan of 1877 was the inspiration for the Tom Cruise movie The Last Samurai. Warpspawn has a two player card game set in the period. Like all Warpspawn games, you need to create your own cards and pieces to play. Satsuma Rebellion game.