This is a small game that I wrote in a day where you have to land a rocket on the green area at a safe speed to win, but if you crash you lose. Click the green flag to start, and use <- and -> to rotate the rocket, and ^ to fire your thrusters. In the top left corner is your fuel, top right is your altitude, and bottom right is your vertical speed. Press r to reset the level and s to start over completely. Also, if you have any problems with lag, just reload the page; that seemed to fix the issue for me.
This project was somewhat inspired by a similar one from @dixiklo.