Steve Winter (born December 8, 1957) is an American game designer who has worked on numerous products for the "Dungeons & Dragons" fantasy role-playing game from TSR and later Wizards of the Coast.
Lee Hammock is a professional writer and game designer.
 Hammock has worked on numerous products for numerous companies, including "" RPG by Louis Porter Jr.
 Design, "The Halo Graphic Novel" and the "Dawning Star Campaign Setting" by Blue Devil Games.
Dawning Star (abbreviated "DS") is a science fiction role-playing game by Blue Devil Games built on "d20 Modern" and powered by "d20 Future" by Wizards of the Coast.
 It is the first full-scale campaign setting using the "d20 Future" ruleset.
 It is published under the Open Game License.
d20 Modern is a modern fantasy role-playing game designed by Bill Slavicsek, Jeff Grubb, Rich Redman, and Charles Ryan.
 It was published by Wizards of the Coast and released in November 1, 2002.
 The game uses the d20 System and Dungeons and Dragons 3.5 edition rules.
 It also provided players the tools to build a campaign in a modern setting.
Darwin's World, created by Dominic Covey, is a post-apocalyptic role-playing game first published under the d20 Open Game License in 2001.
 Originally designed as a quick adaptation of the 3rd Edition Dungeons & Dragons rules, the game has since been greatly expanded and revised and now utilizes the d20 Modern rules.
 Several "Darwin's World" books and supplements have seen print, though most support for the game is still only available in PDF format.
 In 2010, RPGObjects began producing game books using Pinnacle's Savage Worlds system.
Etherscope (published by Goodman Games) is a steampunk role-playing game based on the d20 system.
 It uses the "d20 Modern" rules.
d20 Past is a d20 based role-playing game released by Wizards of the Coast in 2005 as a supplement to "d20 Modern", providing a framework and new rules for campaigns set any historic settings from the Renaissance to World War II, including new character options and rules for early modern firearms.
 It begins with an exploration of the historical period between around 1450 and 1950, then provides rules for creating characters and campaigns that blend realism and fantasy.
 "d20 Past" also presents alternative campaign models, along with all the rules needed to play swashbuckling pirate adventures, Victorian horror investigations, thrilling Pulp Era escapades, and more, including three ready-to-play campaign modules.
d20 Future is an accessory for the "d20 Modern" role-playing game written by Christopher Perkins, Rodney Thompson, and JD Wiker.
 It facilitates the playing of campaigns in the far future, using elements such as cybernetics, mecha, mutations, robotics, space travel, starships, and xenobiology.
 "d20 Future" is one of the most extensive of science-fiction d20 games, and has its own SRD, being a source for many other sci-fi d20 games.
Alternity is a science fiction role-playing game (RPG) published by TSR in 1998.
 Following the acquisition of TSR by Wizards of the Coast, the game was discontinued in 2000 as part of a broader rationalisation of TSR's business holdings, but it retains a small and devoted fanbase.
 Parts of "Alternity" as well as TSR's classic "Star Frontiers" game have been incorporated into the "d20 Modern" game, especially the "d20 Future" setting.
 The first campaign setting for the "Alternity" game, the "Star*Drive" setting, was introduced in 1998.
Dark•Matter is a science fiction/conspiracy theory campaign setting that was originally published in 1999 by Wizards of the Coast as the second campaign setting for the "Alternity" role-playing game.
 It was written by Wolfgang Baur and Monte Cook.
 It was later converted to "d20 Modern" rules and published as a stand-alone book in 2006.

Question: Lee Hammock is a professional writer and game designer, Hammock has worked on numerous products for numerous companies, including which science fiction role-playing game by Blue Devil Games built on "d20 Modern" and powered by "d20 Future" by Wizards of the Coast?
Answer: Dawning Star