: Intel Core 2 Duo or dual-core AMD XP (or better). Memory : 1 GB RAM. Storage : 750 MB available space.
It sounds like you're looking for a way to play on your PC. While the game is not officially available as a "free full version," there are legitimate ways to get it or try it out. arma-tactics-free-download-pc-game-full-version
Here are the best ways to access and what you should know about it: How to Get the Game Safely : Intel Core 2 Duo or dual-core AMD XP (or better)