A scrolling Alien shoot - em - up.
Your comrades have been captured by Aliens.
Destroy the enemy and rescue them.

Alien Syndrome is a run and gun arcade game developed by Sega in 1987.

You must fight your way through large eight-way scrolling levels rescuing their comrades who are being held by aliens. After they have rescued a certain number of hostages the exit opens and they can pass through it in order to fight the end-of-level guardian. If this monstrosity is defeated, they move onto the next stage. As well as two player simultaneous gameplay, Alien Syndrome features pick-ups which assist the player including better weapons and maps of the current level.

Say hello to one of the best alien themed shooters you'll ever have played. Even though the bosses can give you a really hard time in some stages, this game has a high addictive rate. Just run around in the space station and shoot all that moves. While gunning your way through the nice levels (don't search door openers...just shoot them) you have to rescue the human prisoners, that are standing in several corners. The bird-view and the map are making the game really comfortable to play, since you don't have to guess your way every time a path crosses.

They've come from beyond the galaxy and taken your friends hostage. You're an Earth Command Trooper. You're going to get them back!

Control soldiers who must fight their way through large eight-way scrolling levels and rescue all the captives and make it to the escape hatch before the time bomb explodes. Then face the mother alien at the end of the each level.

If you can get hold of a friend, this game becomes a real pleasure to play as you team up to explore and destroy alien-infested ships.

The year is 2089 of the Galactic Calendar. In this far-flung future, humans have colonized the outer planets. Without warning, the glory of this achievement turned into disaster: A horrible race of aliens has imprisoned an entire colony aboard its space ships! Each of these vessels houses countless numbers of slimy monsters led by a vicious alien "boss". Having miraculously escaped capture, you must go from ship to ship in a valiant effort to save your fellow humans.