Retro real-time strategy

Harpoon

1989
Naval strategy game set during Cold War - take part in scenarios on the side of NATO or USSR.

1990
A game that is on a verge between strategy and simulation, set during World War 2, where you can be in charge of the U-Boot wolfpack.

1991
One of the first real-time strategy games (RTS) - set during Cold War we take part in scenarios about Warsaw Pact attacking the west.

1991
Game that is hard to describe in just few words - adaptation of a police TV show from 1980s, with a nice twist.

Can you solve this mystery?
Can you solve this 50 years old unsolved case?