Railroad Tycoon II is a railroad simulation game developed by PopTop Software and released for Windows in 1998. Despite the title, the game is technically not a sequel to the previous Railroad Tycoon designed by Sid Meier.
Virus 2000 (a.k.a. V2000) is the remake/sequel to the 1987 David Braben game, Zarch (later Virus), and was developed by Frontier Developments and published by Grolier Interactive in 1998 for PlayStation and Windows.
StarCraft is one of the most influential real-time-strategy games ever created and one of the most important video games of all time. It was developed by Blizzard Entertainment, and it was initially released in 1998 for Windows.