Some people see Tool-assisted speedruns (TASs) as a cheap way of cheating. I can't blame them, though; the "purpose" of TASing is often poorly explained and most of the work is done behind the scenes. The greatest difference between regular and Tool-assisted speedruns is that:

So, TASers' main task is to create the quickest path towards completion (with several definitions of "completion"). Thanks to emulators, frame-step advances and state-saving, a TASer is able to "see" many things normally hidden from the player including but not limited to RNGs, hidden stats and AI behavior. This also means that a great TASer must be intimately familiar not only with the mechanics of a particular game, but its inner workings and even the console's processes as well. If a speedrunner is a racer, a TASer is a theoretical mechanic (Note that none of these are "better" than the other)

Despite what many people think, the Speedrunning and TAS community are not enemies and often helpĀ each other. See Awesome Games Done Quick

Some personal favorites:

More available at http://tasvideos.org

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