Microsoft Excel 95- "The Hall of Tortured Souls" Easter Egg
Microsoft is an American based multinational software company best known for its MS DOS and Windows operating systems, Microsoft Office productivity applications, Visual Studio development software, Internet Explorer and Edge web browsers, and most recently clouding computing platform Microsoft Azure. In the gaming space, it became particularly prominent through the Xbox console line, a business that would later see Microsoft the indirect parent of developers such as Bungie (formerly), Rare, id Software, Bethesda Softworks, and Raven Software.
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The office program Microsoft Excel 95 features a 2.5D easter egg known as the "Hall of Tortured" souls. Gabe Newell and others from the WinDoom team later left to form Valve Software and work on Half-Life. The LithTech engine by Monolith Productions started out as the "Direct Engine" under contract to Microsoft, after first working with them on the Windows 95 Game Sampler collections. Microsoft was also a co-founder of DreamWorks Interactive in March 1995.