Extreme Cycle Action!
Cycles3D is an online game where you drive a cycle that creates a wall, and you must coax other players to run into your wall.
It was originally created as a project outside of Gamieon to learn how to develop DirectX and network games in the late 1990's. Many years and well over tens of thousands of free downloads later, I recreated it using the Unity engine as a personal challenge to see how fast I could do it. After only two weeks of development, it was playable.
Both versions of the game were abandoned as they were learning projects made for fun and not resale.