Flashy, Fast, and Full of Buttons | GuileKeys GK-21 Review

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Published on June 1, 2025 5:30:05 PM ● Video Link: https://www.youtube.com/watch?v=AYhjZLleWP0

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Today we’re taking a look at the GuileKeys GK-21, a budget-friendly 21-button leverless controller that packs in RGB lighting, hot-swappable switches, GP2040-CE firmware, and a customizable OLED screen. Is it just a flashy gimmick, or does it have the tech to back up the name?

We put it through its paces with Guile gameplay, demo the custom splash screen, break down all the features, and talk about what makes this controller stand out in a sea of compact all-button options.

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Thanks to GuileKeys for providing a review controller.