The aim of the game "Invader Tanks" is to defend the designated area against invaders trying to break through the gate. Fortunately, destroying the gate is not easy. The gate is built solidly and it takes a lot of time to destroy it for a single attacker. Additionally, an energy shield can be put on the gate and defensive cannons can be placed on nearby pillars of the wall. Properly used defence tools are able to resist a huge number of enemy units. In order to buy the defence elements you need to have enough metal. Metal is obtained from destroyed enemy units and through bonuses for group destruction of enemy tanks.

Tip : Making all purchases and using the defence tools menus is possible during the pause which is activated by pressing the space bar.

Gate

When the cursor hits the gate, it will be highlighted. When you click on the gate with the left mouse button, the gate's menus are displayed. The price to be paid for each item is placed next to it. Gateway menu containing the following items:

• Buy Shield – When this option is selected, an energy shield will be applied to the gate.

• Boost Shield – When this option is selected, the energy shield on the gate will regenerate much faster. The regeneration rate of the shield on the gateway is shown in the game status information (upper left part of the screen - "Shield level:...").

• Fix the Gate – It rebuilds the gate after it's completely destroyed.

• Add 50% gate power – Rebuilds half of the gate's life points (when the gate is not destroyed).

If the door shield is destroyed, it is necessary to wait ten seconds to put a new shield on the door.

Canons

Cannons can be placed on the pillars of the wall. When you hover over a pillar, if it is possible to place a gun on it, it will be highlighted. There are two types of guns available. Mounting the cannon costs 350 metal. You can change the type of the cannon by selecting it with the left mouse button and then clicking on it with the right mouse button. Changing the type of the cannon costs 400 metal. If the cannon has already selected its target for attack but it is necessary to change this target (for example, the cannon attacks a blue tank which cannot be damaged by it), then the cannon should be marked with the left mouse button and another tank should be marked for attack also with the left mouse button. If the given tank is in range of the cannon, it will be designated as a new target. If the tank is out of range the cannon will find another possible target to fire.

• Heavy cannon – This cannon throws very heavy bullets, so their reloading takes a very long time, so there are two such cannons on each turret. The cannons shoot alternately, which significantly increases the frequency of shooting but still does not match the light cannons in this aspect. These cannons do a lot of damage to tanks but do not attack drones.

• Lightweight cannon – The primary target of these cannons are drones, so they are the first to be attacked. However, these cannons are not able to detect the presence of drones, but only shoot at places from which the drones are firing. For this reason these cannons shoot only at drones which have already started to fire on the gate. If the drone is firing on the gate but the cannon is currently busy shooting at the tank, it is possible to wait for the tank to be destroyed and then as the first new target the cannon will choose the drone or point the cannon at the new tank as a target that is out of range of the cannon and in this way the cannon as a new target will immediately take the drone.

Rockets 

If the cursor turns green after hovering over a tank and the tank is also highlighted green, it means that a missile attack is possible on this tank, which is activated with the right mouse button. Rocket attack is possible if the metal stock is greater than 150 (rocket price) and the rocket reload has been completed, which is indicated by the rocket reload status bar placed at the rocket launcher. Near the rocket launcher there is always a transformer which is responsible for the rocket reloading speed. On the transformer there is a missile loading speed level meter. When you click on the transformer you will see the price you have to pay for increasing the reloading speed to the next level. The highest possible transformer level is 10. Only rockets are able to destroy the blue tanks available from the second game map.

Finishing

The game ends if more than four tanks pass through the gate, otherwise it is possible to continue the game until the player leaves the gate. During the game, the player gains further achievements, advances to the next levels, collects experience points and adds further scraps to his statistics.

Have a good time!