Neat concept, but it was extremely hard to visually identify what was going on on the screen - from the tutorial you had to memorize in what order the robots were, as well as when placing them down which colour is what robot. For next time, I'd recommend trying to spend quite a bit of time making sure everything is visually distinct and readable to the player, as well as the UI should make clear what you're purchasing.
However, I love the concept of rogue AIs :)