Hit the orb with the middle of the paddle and it goes straight in. Hit it with an end and it goes sideways. Move the paddle through the hit and the orb takes that motion too. In HEART’s SURGE levels, a tap also releases a banked cut through the bricks.
One turn of the crown carries the paddle all the way round. Three sensitivity settings, and it can be inverted. A watch with no usable crown gets a drag along the outer edge.
No phone, no account, no server of ours. The game's own code makes no network call. Scores and saved runs are stored privately on the watch, with optional Android system backup. Google Play handles the purchase and restore.
The run is saved and picks up at the same step. Nothing runs while the app is in the background.
Four colour sets, one for deuteranopia, one for tritanopia, one in grey. Reduced motion and high contrast are settings.
The tutorial, chapter 1, Daily Orbit and Daily Puzzle are free. One full-game purchase opens the rest, including every new mode for existing owners. No subscription.
Six levels that teach the parts, ending on the Prism Core boss.
A 90-second score challenge and a daily Chrono puzzle. The same challenges for everyone; puzzles grow tougher through the week and consecutive solves build a streak.
Thirty more levels and five more bosses. Six campaign worlds in total: moving arenas, portals, prisms, steel, vortices, regrowing bricks and an eclipse.
Play with your optional live heart rate or a simulated pulse. Beating rings and healing bricks lead to calm-opened valves, CONDUCTION’s directed circuits and SURGE’s banked four-hit cut.
Three sets: the original puzzles, MACHINES and OPTICS. Time moves with the crown; stop to read the predicted paths and aim for par in paddle hits.
Start with 45 seconds. Clear an arena to buy more time; a lost orb costs seconds. New shapes assemble around the ball still in flight.
Two opposite paddles, eight levels and multiple orbs. Every dropped orb costs a shield.
All 36 campaign levels on six shields with chapter refills, or all six campaign bosses in sequence.
Waves grow in speed and shape across different worlds. Every fourth wave offers available upgrades; keep playing until your shields run out.
Choose HEART to see an explanation and choose live or simulated pulse. With permission, the watch sensor adapts gameplay while HEART is open in the foreground. Decline, or play without a compatible sensor, and a simulated pulse takes over. Other modes do not need the permission. There is no background health tracking or access to Health Connect records.
HEART is a game, not a medical device; it does not diagnose, treat, cure or prevent medical conditions. From version 1.10.1, measured pulse and baseline values stay in memory and are not kept in new saved runs. Readings are not sent to the developer. Read the full privacy policy.
Captured from the game running on a round Wear OS display.
Junction
Surge
Twin
Void
Boss
Reactor
Daily
Map
Clear
Title
IgnitionEarlier gameplay recorded on the watch, in hand, by the person who built it. The new HEART modes are shown in the screenshots above.
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