Velocity Vector

please help find line game

a while ago i was playing a game, i cant remember the name but in the game you vs a friend and player one is a blue line and player 2 is a green line. the line is always moving at the same speed and leaves a trail, you cannot hit your or your opponents trail, and u cannot hit the wall or you loose eventually someone crashes and the match restarts. the background is just a black screen. please post back if u know the name of this game or have a link

Ancient Anguish