PG Forever is a remake of Panzer General, a classic military turn-based strategy. You can play against the computer or against another player. You can choose which side to take. The game covers both world wars.
Game requirements are minimal. 40Mb free disk space, Windows 2000 or higher (95/98/Me are not supported) and that's it. It can be played on netbooks and Windows tablets (but consider using mouse, playing with touch screen is very hard).
The game is distributed as a zip archive. Download, unzip and run PGForever.exe and you're ready to play.
Download from the official site (12Mb zip archive):
Video from the game: