Vercel CEO Creates DOOM-Themed CAPTCHA to Stop Bots

Verifying human identity online has long relied on mundane tasks like deciphering distorted text, identifying objects in a grid, or simply clicking a checkbox. Guillermo Rauch, CEO of the front-end platform Vercel, is challenging this status quo with a new, interactive approach: a CAPTCHA that requires users to play the iconic first-person shooter DOOM.

Built using Vercel’s own AI site builder, the tool forces site visitors to engage in a brief gaming session. To successfully pass the security check, users must navigate the game and eliminate at least three monsters. The playable demonstration is available for public testing here.

Community Reaction and Challenges

While the concept of using the classic shooter as a security gate is not entirely new, the project has gained significant traction within the developer community, notably climbing the rankings on Hacker News. Feedback from early testers has been varied, highlighting both the novelty and the practical friction of the design:

• Difficulty levels: Some users have reported that the task feels surprisingly challenging for a standard verification check.
• User experience: One tester noted that the high density of enemies required multiple attempts to complete, jokingly comparing the frustration to traditional CAPTCHA methods.
• Reception: Despite the difficulty, many developers have praised the aesthetic and creative execution of the project, with some calling it “so metal.”

This DOOM-themed verification method serves as a departure from the increasingly automated and often tedious security protocols seen across the web today, turning what is usually a fleeting annoyance into a moment of interactive entertainment.