Before you watch it I just need to remind you that I used new recording equipment, and I accidentally cut out the ending of level 6 and level 9. Sorry!
The game Nodes is based on using red 'nodes' which are connected to each other, and move them around so that they cover the blue dots within the game. There are 20 levels all together and 2 difficulty levels. As you progress through the game the levels get harder. Which means more nodes to move and more blue dots to cover.
Enjoy the walkthrough!