The Internet Archive has an emulator for SSG’s MS-DOS game, Carriers At War. The 1992 game ha a number of Pacific Battles to fight out. I enjoyed this back in the day.
The Internet Archive has an emulator for playing Nuclear War, an MS-DOS game from 1989.
The classic Ancient Art of War game, released by Broderbund in 1984, is available to play on archive.org in an emulator.
Card Creator is a piece of software that helps you design your own Magic-style cards.