It's an undefined year in the future, and the location is inside of a Federal mothership. Everybody is getting ready for the final attack to the evil alien forces.

Pilot: "Looks like it's gonna be a suicide mission, it won't be easy to get in contact with the planet... I can't even think of entering the subterranean enemy base and blast the nuclear generator!"

Commander: "We can't do anything else than that. It's our only chance: we just must try it. Our mothership will stop at a secure range so it won't be intercepted by the enemy army. As soon as you start the attack, we'll place outside of the asteroids belt around the planet. It's defended by three sentinel ships. Your first objective is destroying those ships, and we'll support you!"

Pilot: "OK, I already heard those words in the past... I just hope things will be different this time... When's shall I attack?"

Commander: "Now. Get ready and good luck!"

Gun Lock is an incredible Taito game taking place in a far away planet. Our mission is similar to the one of Luke Skywalker in the "Star Wars" movie: he stood aboard on a space ship and had to destroy the nuclear generator of the "Death Star" by shooting a single bomb on its core. In this videogame, we have to delete an entire planet from the Star map!

Our space ship is well-armed with laser guns and homing missiles - at first we can fire just five simultaneously. All we have to do is locking targets inside of an aiming square placed in the front of your ship. Then press action button 2 and see a storm of missiles move against targets and making them blow away. Hint: lock as many enemies as possible before shooting missiles, so you'll score many more bonus points!

We have three ships at first but we'll receive more as we reach 1.000.000 and 2.000.000 points. No other kind of bonus will make us gain more ships.

The panel shows a lot of indicators: player's scores on top left and right (player 2 can join anytime and play with us in co-op mode - that's best to complete many more stages); highest score on top; the number of missiles left and the gun power level on bottom left and right.

When battling, we'll often meet red enemies: they hide a powerup bonus in the shape of colourful shining icons or pyramids. By collecting those icons we can increase the maximum number of missiles up to eight (the "L" tags), and power up laser guns up to six (three red pyramids or a yellow one make level increase by one) - though you'll be never armed enough to fight so many powerful enemies! If our power is already to the maximum, we'll just get some extra points.

There are seven battling areas (stages) we'll have to cross. The earlier ones show the approach to the planet, then there are some stages with battles over the surface, then the subterranean levels and lastly on the surface again.

At the end of each area we'll fight the usual boss, really well-armed and capable of destroying any hostile ship in a few seconds. The first one won't cause us any problems, but since area two onwars... well difficulty shifts from hard to impossible!

If you didn't have enough of destroyers as area bosses, well don't worry: there are plenty and various dangerous enemy ships, tanks, hunters, transforming robots with huge laser guns, animal-shaped monsters... you'll often think you've reached the final act, but it's not - that's just an excerpt of the enemy power! The mechanical crab in level three, for example, follows our ship with extreme intelligence until it reaches and hits us. Crushing one of its claws (each featuring a ray gun) won't stop it: it will regenerate in a few seconds!

At the beginning of each level we'll see the name of the area, suggesting what we're to expect there:

Area 1: Red power to pierce through
Attack to the orbital station ahead the asteroids belt.

Area 2: The gravity of blue side
Action takes place in space and inside of the orbital station, until you'll reach planet's atmosphere.

Area 3: The Phantasm of silver
A battle taking place in the skies of the planet.

Area 4: The fissure of consciousness
Ship flies lower, and we'll battle enemies standing on the land: earth-to-air missile launchers supported by incredible storms from the sky. Attack to the subterranean base, entering from a break in the planet's surface.

Area 5: Towards the darkness
A battle taking place below the planet's surface, before fighting a giant robot looking like an ancient warrior though having ultra-modern armour, destructive rays and lightning bolts which arrely miss their target - your ship!

Area 6: The end of deep layer
A sequel to the previous mission. The last phase below the surface.

Area 7: Releasing infinitely
We're about to reach the goal: let's go back to the planet's surface with a flight on an endless city. After destroying a huge battle machine armed with powerful and precise weapons, we'll launch the ultimate storm of missiles against the nuclear generator. The explosion will blow the planet away, making it to a new asteroids belt moving around in empty space.
Mission accomplished.

So what about our hero (well... our pilot is female actually!) after the explosion? She couldn't reach the safety zone, so rocks damaged the space ship. Now the relict travels randomly across unknown space together with the planet's rubbish. That was a suicide mission actually, but they didn't tell us so!

At the end of the game, if you didn't accomplished the mission, a map with the full course you've done will be shown. Plus, if we marked a high score, we'll enter the game history by placing our initials in the highest scores table.