Pixus tasks you with launching coloured pixels from the bottom of the screen in order to hit and eliminate like-coloured pixels. You choose which colour you want to launch and then draw a line of "pixel paint" across the screen.
The screenshot shows me launching a line of five cyan pixels which will take out those cyan pixels that form part of the main shape. With the cyan out of the way, I would then be able to hit the three pink pixels behind them. Make sense?
You have a limited supply of paint, and a timer ticks down quickly, meaning you have to think and act with efficiency. It's deceptively tricky.
Pixus [Revzin Ideaworks]