Splix.io is a simple game but a lot of fun can be derived from it. Start as a colored line and navigate to draw a piece of area for yourself. As you set out to do this other player will try to crash your party and vice versa.
Apply the “Rome wasn’t built in a day” lecture. Expand your area gradually to make sure no one gets to intercept you.
The game is very easy to control: WSAD or arrow keys.