X-COM - X-COM is a Science-Fiction, Turn-base Tactics, Strategy and Single-player video game series developed by Mythos Games and published by MicroPose.
Xenonauts - Xenonauts attracts greatly on the sci-fi universe of the original X-COM to make a very familiar turn based tactical adventure.
Mount & Blade II: Bannerlord - Mount and Blade II: Bannerlord is an Action-Adventure, Hack and Slash, Single-player and Multiplayer video game developed and published by TaleWorlds Entertainment.
Battle World: Kronos - Battle World: Kronos is a Turn-Based Real-Time Strategy (RTS) game along with a battle structured video game developed by KING Art.
FallNation - When facing the end, and the last resource is no more than a company of soldiers.
Jagged Alliance 2 - Jagged Alliance 2 is one of the older tactical role playing games.