Okay, so this is one of those classic Codename: KND Flash games where Numbuh 3 gets trapped in Rainbow Monkey Happy Sugar Land (because of course she does). Everything’s all candy and rainbows until King Sandy’s knights show up to ruin the party. Now she’s gotta yo-yo her way out—which is exactly as chaotic as it sounds.

You just click around to swing the yo-yo, smacking knights and dodging their attacks. It’s simple, but the whole thing has that weirdly charming KND energy—bright colors, silly sound effects, and Numbuh 3 bouncing around like she’s having the time of her life even while being chased. If you ever watched the show, this feels like a lost episode in game form.

Fair warning: it’s Flash, so good luck running it these days without some workarounds. But if you manage it, it’s a fun little nostalgia trip.