What Does This Mean?
Abbreviation for "Tool-Assisted Speedrun," a speedrun performed using tools (emulators, frame-by-frame input, save states) to achieve a theoretically optimal or perfect run, distinct from real-time human speedrunning.
REAL-WORLD EXAMPLE
"That run isn't legal, it's a TAS, no human can pixel-perfect that many inputs in a row."
LORE & ORIGIN
Roots trace to Doom's (December 1993) demo-recording features, with Andy Kempling's 1999 source-code modification adding slow-motion and frame-precise recording. The term itself was formally coined in June 1999, when a site literally named "Tool-Assisted Speedruns" launched to host these runs. TAS gained broader traction in 2000 (the Famtasia NES emulator added TAS-supporting features, and Japanese player Waiwai made an early TAS video) and became a competitive category after "Morimoto"'s viral 2003 Super Mario Bros. 3 TAS run on TASVideos.
EQUIVALENT CONCEPTS IN OTHER LANGUAGES
MENTIONS OVER TIME
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