Me and Phil fell over a really nice UT2k4 total conversion: Alien Swarm. A quote from <a href="http://www.blackcatgames.com/swarm" title="Alien Swarm">the official website</a>:<br /> <blockquote>Alien Swarm is an overhead view tactical squad-based shooter for UT2K4. Set in the the distant future, the players take the role of a Commander in the Interstellar Armed Forces. They must guide their squad of marines through Swarm infested colonies, overrun bases and outposts, to achieve a variety of objectives. Featuring Assault Rifles, Heat Tracking Guns, Sentry Guns, Flamethrowers and more. Supports co-operative multiplayer.</blockquote><br /> I can't stress the word "tactical" enough here, rushing into the action without thinking simply doesn't work. The greatest thing - besides the awesome visuals and the IMO atmospheric soundtrack - is the co-op play in our opinion. There are definitely not enough games out there with a thought through co-op mode.<br /> <center><br /> <a href='/serendipity/uploads/alienswarm1.jpg'><img width='250' height='188' style="border: 0px; padding-left: 5px; padding-right: 5px;" src="/serendipity/uploads/alienswarm1.serendipityThumb.jpg" alt="" /></a><br /> <br /> <a href='/serendipity/uploads/alienswarm2.jpg'><img width='250' height='188' style="border: 0px; padding-left: 5px; padding-right: 5px;" src="/serendipity/uploads/alienswarm2.serendipityThumb.jpg" alt="" /></a><br /> </center><br /> Try that game if you got UT2k4 lying around. It's kinda tough, but loads of fun!