Collider is focused on a player vs player fight. Both sides have the same chance to beat each other. There are several options to take advantage on our opponent.
First of all, you can choose from 3 types of minion: Knight, Ranged and Tank.
In addition, There are Area of effects(AOE). These influence both our and enemy minions. Also, your castle can cast spells.
At the beginning of the game you must decide what traits of your minions you increase. You have credits to spend on your unit. You might see how this works in the game as well.