gridblink

Gridblink is a memory game integrated into Reddit, featuring a 3x3 grid where players tap circles that light up and emit pentatonic tones, which change daily. It offers daily, 7-day, and all-time leaderboards, adjustable speed settings, and requires no downloads. Developed during the Reddit x Kiro Hackathon in October 2025, it allows users to engage directly within subreddits. The game was inspired by traditional memory games and optimized for mobile interaction, with a focus on simplicity and user engagement.