《太空复仇者》（英语：Astro Avenger）是由SAHMON Games制作的一部纵版STG射击游戏。
Astro Avenger is split into 5 different worlds (galaxies), each with 10 levels (a total of fifty). As you move on, your opponents become more dangerous and deadly, before you finally encounter "level Boss".
The good news is you get money for each destroyed enemy battleship. With this money, you can turn your rather average spaceship into a space fortress. You can buy power-ups for your weapons and replace old weapon systems new ones. Likewise, you can upgrade your armor and batteries (which is essential, since each laser blast or plasma shot consumes quite a bit of energy). And it's sure a good idea to stock up on rockets and bombs, which act as a backup weapon when situation becomes dire.
The trick with Astro Avenger is that you have to plan carefully and conserve your resources. Coming up with a right spaceship improvement strategy can save a lot of troubles later on in the game. Likewise, making a mistake in the very beginning may make finishing the game nearly impossible. The good news is that the registered users can save the game and load it later.
In the decade since the Global Political Crisis, mankind has entered its second golden age planning to expand the man’s presence further in the Galaxy. But all the plans for the prosperous future crashed with the abrupt appearance of the hostile alien fleet destroying everything on its way. Humans found themselves on the verge of extinction and endeavored to resist the enemy. But all the attempts would have been vain had it never occurred to them to find and assemble the secret weapon which might reverse the flow of war to their favor.