HUMANKIND is described as 'HOW FAR WILL YOU PUSH HUMANKIND?'. There are eight games similar to HUMANKIND for a variety of platforms, including Mac, Windows, Linux, Online / Web-based and Android. The best alternative is Civilization. It's not free, so if you're looking for a free alternative, you could try FreeCiv or Widelands. Other HUMANKIND like games are Endless Legend (Paid), Tanks of Freedom (Free, Open Source), UniWar (Freemium) and Crown of the Gods (Free).
Freeciv is an open-source, turn-based strategy game based on Civilization II. Inspired by the history of human civilization, the game commences in prehistory and your mission is to lead your tribe from the stone age to the space age...
Classic turn-based strategy game with two armies fighting against each other. Challenge yourself in campaign against AI or hot-seat battle with a friend. Using easy map editor you can create any imaginable scenario to play.
UniWar is a turn-based strategy game where players battle it out on the field with units of differents races, building bases and using the terrain to overcome their opponents towards victory. Several modes are available along with many maps to play.