Question: When was the Half-Life first-person shooter game released by game development community MapCore? 
Related documents: [0]  [DOC] Half-Life (stylized as HλLF-LIFE) is a science fiction first-person shooter video game developed by Valve, released in 1998 by Sierra Studios for Microsoft Windows. It was Valve's debut product and the first in the "Half-Life" series. Players assume the role of Dr. Gordon Freeman, who must fight his way out of a secret research facility after a teleportation experiment goes disastrously wrong, fighting enemies and solving puzzles. [END] 
[1]  [DOC] MapCore is a game development community with origins in "Half-Life" mod production, which since its inception in 1999 has evolved into a thriving forum featuring all flavours of game development including level design, modelling, concept art, and programming. With 100+ members part of the professional games industry working for the likes of Blizzard, Crytek, DICE, Gearbox Software, Rockstar Games, and Ubisoft, MapCore offers an opportunity for professionals and amateurs alike to socialise, learn, teach, and find talent. [END] 
Answer: 
1998
1998