Rocket Ranger is a game originally released for personal computers, then was ported to the Nintendo Entertainment System.
You are Rocket Ranger, a pulp fiction hero who is out to stop a takeover of the whole world by Nazis who, in an alternate timeline, have won World War II and then conquered the planet, according to the scientist from that timeline who has sent the rocket technology to the present time for Rocket Ranger to use. (In the NES version, the Nazis were replaced by alien humanoids in the game's storyline.)
Using a rocket pack and a radium pistol, the player must fly around the world fighting the escalating Nazi technology. Sometimes this includes shooting down enemy fighters with the radium pistol to intercept enemy shipments. Sometimes the sequences degenerate into bareknuckle fistfights with enemy Nazi guards in order to gain rocket parts, and sometimes he has to disable the defenses of two available lunarium depots to get fuel for both his own rocket pack and the rocket ship he must assemble.
From time to time, the hero must catch up with a kidnapped scientist and his voluptuous daughter in a zeppelin. This was one of the few games to use the Amiga's speech synthesis facility; this was in use when encountering the scientist and his daughter, the love interest for the game.
One part of the game takes the form of a strategy game: from a world map display the player directs five agents to search for hidden Nazi bases and they can also "organize resistance" to slow the enemy's advance towards the USA.
The ultimate goal of the game is to collect five parts for a rocket ship and 500 units of lunarium to get to the Moon and close down the mines. But as it turns out, the Nazis were not the only ones involved in the scheme: an "Interplanetary Union of Fascists", which was formed by aliens, have struck a deal with the Germans. In order to achieve final victory, the Rocket Ranger must battle one of these aliens.