Use your droids to destroy the enemy defences in a reversal of the classic tower defence type games.

The free version features eight missions, each of which can be played at four levels of difficulty.

To play the game, you choose the droids you can afford with your starting cash. As a new recruit you start with 100 credits, but as you gain rank with experience this rises. You'll need the extra money to complete the missions at the hardest levels.

Click on the droids and drag them to where you want them to move to. When selected, a circle highlights the range of the droid. Clicking on the defenders shows you their range.

The four droids you can choose from have all got different strengths (and differnt costs). Choosing a mix of droids seems to work well, but find a mix that suits your own style of play.

Sending multiple droids to attack the same defender is a good tactic: the nearest droid takes all the damage but all the droids will attack as soon as the defender comes within range. This approach results in the defender getting killed quickly, minimising the amount of damage it can inflict.