Signal

Signal is a memory game by Mikey Lambo on itch.io. Instead of a flat grid it uses a 3D board of rim-lit cubes with bloom, spatial audio and combo feedback, which you can rotate. The task is the classic one: watch the signal, a set of tiles that light up, then reproduce it.

Five protocols change what has to be remembered. Spatial asks for the lit tiles in any order, Sequential in the exact order shown, Interference hides the pattern among flashing decoys, Rhythm asks for the timing between signals, and 2-Back has you say whether each tile matches the one two steps earlier. Three pacings set the pressure: Classic is timed with one mistake ending the run, Zen has no clock, and Sprint gives you 60 seconds. Two modifiers add colour channels with their own tones, or hide the board so you find each signal by stereo sound and pitch.

The Daily Calibration is the daily part. Once a day you get one run in Classic pacing on the protocol the date picks, so the five protocols take turns over five days. The cubes that light up are drawn at random for each player, so two people meet the same rules on a given day but not the same pattern. The run is worth double the in-game currency, builds the day streak, and is ranked on its own leaderboard beside the boards for each protocol, pacing and modifier. The game also keeps per-protocol mastery and a run history.

It has full keyboard play, screen-reader announcements of the board, reduced motion and colour-vision-conscious palettes, and plays offline once loaded. Headphones help in the sound-based modes. It suits players who like short memory tests and a daily score to compare.