Doom trivia

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Doom Mini Quiz

Test your knowledge with these top questions!

Question 1

Doom stored level geometry using a data structure that recursively divides space. What is this structure called?

Binary Space Partitioning (BSP) trees enabled Doom to render complex 3D environments efficiently on limited 1990s hardware by quickly determining visible surfaces.

Question 2

Doom's engine used a technique for fast 3D-like graphics by limiting the vertical axis. What is this called?

Doom's 2.5D engine allowed for efficient rendering by simulating 3D environments using 2D maps with height information, but it couldn't display rooms stacked vertically.

Question 3

Doom popularized 'WAD' files for custom levels and mods. In game development, what does 'WAD' stand for?

The WAD file format used in Doom allowed players to easily create and share custom content, helping to establish one of the earliest modding communities in gaming.

Question 4

Doom's source code was released under a respected open-source license. Which license was ultimately used?

Doom's source code was originally released under the GNU GPL in 1999, which helped inspire a wave of community-created game engines and mods.