GunBound - GunBound is a Turn-based, Free to play and Online-Multiplayer video game developed and published by Softnyx.
TripleA - TripleA is a free (under GPL) turn based strategy game based on Axis & Allies board game.
Hedgewars - Hedgewars is a Free to play, Single-player and Turn-based Strategy video game developed by Hedgewars Development Team.
Warlight - Warzone is a customizable Risk-like strategy game where you compete with your friends to conquer the world.
Worms Battlegrounds - Worms Battlegrounds is a Single and Multiplayer Turn-based Strategy video game developed and published by Team 17.
Domination - Domination is a game that is a bit like the well known board game of Risk.