Believe it or not, the idea is not new: In May 2021, Miquel Camps Orteza published a project in which each player/user must annihilate four demons from Doom to pass the equivalent of a Captcha. However, this new version shared by Guillermo Rauch goes much further: You have to kill three demons on Nightmare, starting with the pistol. Good luck?
Even in its traditional versions, Doom presents a great challenge to any player who has lost the habit with FPS. Personally, I feel that I have become slower (the years don't come alone), and I must admit that some difficulty levels already overcome me completely. For this reason, I was so surprised when I played the last version of Doom Captcha published by Guillermo Rauch, developer and CEO of Vercel. In short: Don't ask for mercy, because it offers none.
Doom Captcha on Nightmare
This particular build combines Emscripten and WebAssembly to load the shareware version of Doom. In fact, the trained eye will probably recognize the level in question: It is E1M9: Military Base, the «secret level» available through E1M3: Toxin Refinery. But that's not all: The game was configured on Nightmare with the -fast flag, meaning enemies move faster, and the delay between their attacks is shorter.
As if that weren't enough, the Doomguy starts with a simple pistol, it's not possible to open the menu, and we have no mouse control. The experience is pure keyboard, with the arrows, the space bar, and <> for strafe. What do they say on the Web? Under those conditions, the best thing is to shoot into the air, attract the first Zombiemen, and kill three at a distance. The cross attacks of the Imps with their fireballs are brutal at that speed.
To finish, this is nothing more than an experiment. On one hand, it's not a «secure» Captcha, and on the other, using the shareware version of the .wad file could cause some legal conflict.
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