Tether is a two-player cooperative . Each player controls one spaceship, and an electrified net connects the two. As they cruise around they clear out several different types of space debris as well as several different enemies.

http://globalgamejam.org/games/space-defenders-23rd-century-aka-tether

Justin Hair/Epic Games, inc/Jushair@gmail.com/artist
Aaron Jones – artist
Zach Derouiche – artist
Wes Hunt – programmer
Scott Jacobs – programmer

Brief Play Description:
The two ships exist in a side-scrolling 2D world. The tether between the ships acts as chain, including distinct links. When the ships draw close together, it can become slack. If they separate to make the tether taut while it is in contact with an object, the game’s physics permit them to fling that object away.

[youtube]http://www.youtube.com/watch?v=CckoovuWUI8[/youtube]