Question: Buck Rogers: Countdown to Doomsday is a role-playing video game released by Strategic Simulations in 1990 , set in which game setting created by TSR, Inc. in the late 1980s?

Context paragraphs:
Menzoberranzan (video game): Menzoberranzan is a 1994 role-playing video game created by Strategic Simulations and DreamForge Intertainment.  "Menzoberranzan" uses the same game engine as SSI's previous game, "" (1994), and is set in the "Advanced Dungeons & Dragons" Forgotten Realms campaign setting.

Eye of the Beholder (video game): Eye of the Beholder is a role-playing video game for computers and video game consoles developed by Westwood Associates.  It was published by Strategic Simulations, Inc. in 1991 for the DOS operating system and later ported to the Amiga, the Sega CD, Game Boy Advance and the SNES.  The Sega CD version features an exclusive soundtrack composed by Yuzo Koshiro.  A port to the Atari Lynx handheld was developed by NuFX in 1993, but never officially released.

Buck Rogers XXVC: Buck Rogers XXVC (sometimes written as Buck Rogers in the 25th Century) is a game setting created by TSR, Inc. in the late 1980s.  Products based on this setting include novels, graphic novels, a role-playing game (RPG), board game, and video games.  The setting was active from 1988 until 1995.

Buck Rogers: Matrix Cubed: Buck Rogers: Matrix Cubed is a role-playing video game developed and published by Strategic Simulations in 1992 .

Buck Rogers – Battle for the 25th Century: Buck Rogers – Battle for the 25th Century is a strategy board game published in 1988 by TSR, Inc..  The game uses the setting and themes of the 1930s Buck Rogers serials, and the design of 1950s space-race-era propaganda.  The units and game-play for the game work similarly to "Axis & Allies", with naval units being replaced by space ships and two different kinds of infantry instead of one.  The game was produced in large quantities, but never sold well and didn't last past a second edition.

Buck Rogers: Countdown to Doomsday: Buck Rogers: Countdown to Doomsday is a role-playing video game released by Strategic Simulations in 1990 , set in the Buck Rogers XXVC game setting.

Colonial Conquest: Colonial Conquest is a turn-based strategy video game developed by Strategic Simulations and was released by Strategic Simulations, Inc in 1985 for Commodore 64, Atari 8-bit family and Apple II.  It was ported to the Atari ST by Andromeda Software in 1987 and NEC PC-9801 in 1989.

Pool of Radiance: Pool of Radiance is a role-playing video game developed and published by Strategic Simulations, Inc (SSI) in 1988.  It was the first adaptation of TSR's "Advanced Dungeons & Dragons" ("AD&D") fantasy role-playing game for home computers, becoming the first episode in a four-part series of "D&D" computer adventure games.  The other games in the "Gold Box" series used the game engine pioneered in "Pool of Radiance", as did later "D&D" titles such as the "Neverwinter Nights" online game.  "Pool of Radiance" takes place in the Forgotten Realms fantasy setting, with the action centered in and around the port city of Phlan.

Ravenloft: Strahd's Possession: Ravenloft: Strahd's Possession is a 1994 fantasy role-playing video game developed by DreamForge Intertainment for Strategic Simulations, Inc. for DOS. ""  is a sequel to this game.

Dark Sun: Shattered Lands: Dark Sun: Shattered Lands is a turn-based role-playing video game that takes place in the "Dungeons and Dragons"' campaign setting of Dark Sun.  It was released for MS-DOS in a somewhat unfinished state in 1993 by Strategic Simulations, and later patched to a more workable version.  It was available on both floppy disk and CD-ROM, though the CD-ROM contained no additional content and was merely used to install the game to the computer's hard drive.

Supporting paragraphs: Buck Rogers: Countdown to Doomsday Buck Rogers XXVC
Answer: Buck Rogers XXVC