Cossacks 3 will be a real-time strategy video game for Microsoft Windows, OS X, and Linux made by the Ukrainian developer GSC Game World. It will be released in 2016. The game will be a remake of the 2001 classic and is again set in the 17th and 18th centuries of Europe. The original 12 nations will make a return as well as 70 various types of playing units, 100 scientific researches, and over 140 diverse historical buildings.

The game will feature up to 7 players support, armies numbering in thousands of soldiers, reconciled game mechanics, a vast selection of unit types, cold steel and firearms, influence of the landscape, and the realistic physics of bullets and cannonballs will provide the player with an unlimited number of realistic tactical opportunities. Possibility to unite into teams or to play against the computer. Flexible customization of random maps with selection of the desired landscape are to return as well.

The developers have also mentioned official modding support and tools will be coming out with the release of the game in an interview, the same tools used to make the game.