Lee Brown wins a £25 AF Mail Order voucher for sending in the first 30 level codes of Clockwiser.

If your patience is being stretched by the blue Putty blob, here are the level codes for this Amiga Format Gold-rated platform romp:

CAPRI, BURGER, GAIA, ORGAN, PREY, DREAMER, CHRIS, BAZGIBB, ARABIA, JET, MELON, RHUBARB, GONDOLA, ARIES, CHERRY, FODDER, NICKEL, SENNA.

A Rieder, Reading

Reviewed AF59 € 84% € Gremlin (01742 753423)

The first stage is to establish your base, allocate all your money to construction, build a command centre, construction yard, gravity nullifier and sort out the resource stuff such as power and water.

You also need a weapons factory, a landing pad, four mines, four deep bore mines and a protected storage tower to put the ore in. If you want some other stuff just build it. The military buildings can wait until you have more money. Warning: do not put the resource producing buildings together because a direct missile strike would cripple the asteroid.

Once your asteroid complex has been built and the ore is coming in, it is time to explore. Build three scouts with no weapons - due to their low armour, if they come under attack they die anyway. Set them out exploring and after you have found a few asteroids call up Sci-Tek.

It is worth buying the two second generation blueprints and, if you have the money, the construction droids are also worth getting to speed up ship production. When the scouts return send them out to survey the newly-discovered asteroids - you need to know the best one for when you start expanding.

If you are playing on the easy levels then the empire should send you reinforcements, otherwise you have to build your own. Organise your forces into offensive and defensive fleets. Try using five assault fighters with Plasma or Photon Cannons in each fleet for each asteroid, and one attack fleet with three or four combat eagles with a Photon Cannon and a Chaos Bomb plus some heavier ships after building an orbital space dock.

By now the Imperial Ore transporter will have arrived. Check out the mining report and sell all the ore in stock. Aim to keep one or two units for yourself depending on demand. Start to build up military installations on your asteroid. By now it is worth stockpiling missiles for the first enemy encounter. Once an enemy asteroid has been spotted dispatch a satellite to have a look.

Here's a hint: on the asteroid field screen, define all your asteroids as F1, F2 and so on. Define the enemy's asteroids as F10, F9 etc. This allows you to switch between them a lot quicker. If you are on the main asteroid screen and you press an enemy function key you get a view of that asteroid for a couple of seconds even if you haven't got a spy satellite and even if you don't know where it is. This allows you to estimate the state of the enemy.

KLINGONS ON THE STARBOARD BOW...

Feel free to reload the game if things go wrong. If you cannot destroy the enemy asteroid and the enemy take a passive stance then reload and expand your colony. If you find a colony in the process of being built with an alien transporter there, then send a defensive fleet to destroy it followed by a missile strike to wipe out the colony. If you destroy the transporter then the alien can't colonise any more asteroids until it builds another.

During this period you should have little money. Concentrate on building up your defensive fleets within reason and exploring for new asteroids. Unless you have a specific requirement ignore Sci-Tek. You can usually live without it.

Now put four or five spacecraft into a fleet with the transporter and go off and establish another colony. You can then use the fighter escort to defend the new colony. Each new asteroid colonised takes between 300,000 and 400,000 credits, pick the one with the greatest amount of ore away from the enemy. Set up all the basic buildings as you did before, but ignore the shipyard and build up the military installations.

HI-HO, HI-HO, IT'S OFF TO WORK WE GO!

When it comes to selling your stocks, remember to keep some back for yourself. Keep expanding until you occupy three or four asteroids. If you have access to a supply of traxium or nexos then buy the blueprints for the seismic penetrator. These ores sell at a tremendous price.

When the money starts rolling in buy the anti-missile pod and the ore teleporter - these allow you to construct a proper network. If you can afford screen generators then set them up protecting all your asteroids, but remember to provide enough power to keep expanding to new asteroids and buy blueprints as required. You should eventually reach a crucial stage in the game where your asteroids are running out of ore and the enemy is becoming increasingly aggressive.

When a type of ore becomes exhausted then destroy the relevant mines - they merely consume power. Choose an asteroid relatively near the enemy and collect enough ore to build an orbital space dock. Equip it with the best equipment and remember to include some shields. Buy the terminator and battleship blueprints and start to build up an attack fleet. Remember to include some ship-to-ship weapons to take out enemy fighters. Keep building up your missiles in preparation for the final conflict.

ATTACK! ATTACK!

Rest for a bit to build up your stocks of missiles then carry on to the next asteroid. You must be prepared for massive missile attacks as you target each asteroid, and even if you lose a colony it may be best to press on with the attacks. The game only requires you to destroy the enemy and does not take into account the state of your colonies. If all goes well you should wipe out the enemy and complete the level. Carry this on to finish the game.

Want loadsa cash? Instead of selecting Start Game, select Exit and when the burning flag thingy appears, type: ZXR75OR

The screen flashes to indicate the cheat has been activated. You can also type Housey for some music.

John Oates, Clayton, Manchester

Here are some level codes:

S Necek, Leabrooks, Derbyshire

I have found a cheat for Dune 2. It only works using Ordos as your selected house. First build up your base as normal with defences, then send a few tanks into the enemy base to locate their construction yard and work out the general layout of their other installations.

The enemy will begin to attack your base, but the defences you built up earlier should be strong enough to cope with the intruders.

Send a deviator launcher between your base and the enemy base. When an enemy tank appears use the deviator to change it to an Ordos tank. Then select it and order it to attack the enemy construction yard. When you've done this select it again and select Attack but don't click on anything.

When the tank changes back to the enemy's side click on the construction yard again and the enemy tank fires on its own base until the construction yard is destroyed.

Repeat this process with other enemy units and it is possible to defeat the enemy using their own vehicles.

P Mountain, Doncaster

Spot of bother
I'm having trouble with Cool Spot. I can't seem to get past the first couple of levels - please help.
Dafydd Jones, Kingswood, Bristol

Try these Dafydd. Pause the game and using the joystick create the word COOL - Left, Down, Right, Fire = C. Left, Down, Right, Up, Fire = O (Repeat) and Down, Right, Fire = L Up, Down, Left, Right, Fire = Return. Upon entering the letters, Cool Spot should say OK.

Unpause the game and you should shoot straight to the bonus level. Completing the letters also activates the following keys: Press numbers 1-10 to jump levels 1-10. F10 takes you to the next level while F9 returns you to level 1.