

Shooter · New game
Grumpy Geometry
A ship circles the rim of a tunnel, firing on its own, while furious shapes inside unleash bullet tantrums and the player decides only where to be.
#66 this week
The game runs in this tab. No install, no account.
The short answer
Grumpy Geometry is a bullet hell played on the rim of a ring, where the ship shoots by itself and the player only chooses where to sit. Grazing bullets builds power, a charged laser clears space, and every finished or failed run pays credits into a tech tree with more than a hundred nodes. It is free and runs as an HTML5 build in the browser.
What is Grumpy Geometry?
Grumpy Geometry places a ship on the rim of a ring-shaped tunnel with a furious geometric shape sitting at the middle. The shape throws tantrums made of bullets while the ship's weapon fires by itself. The player's only job is the line around the rim: where to sit, how close to shave the patterns, and when a charge is worth spending.
It is a bullet hell layered over an incremental game. A run closes when the fuel runs out, the hull breaks, or the boss falls, and every one of those endings pays credits. Those credits go into a tech tree of over a hundred nodes, and the next flight launches with a meaner ship. The game is free to play and still in development.
The demo holds four bosses, each with a temper of its own: a Sleepy Circle, a Sulky Square, a Prickly Pentagon and a Huffy Hexagon. More shapes, an Angry Mode and challenge runs are planned.
How to play
Positioning carries the whole game. The weapon fires unprompted, so every decision is spatial: which arc of the ring to hold, how wide to leave the gap, and how near a bullet can pass before the risk stops being worth it. Brushing past bullets is how the ship powers up, which turns a clean, distant dodge into the safer but weaker choice.
The laser is a separate decision. It fires when charged, so holding it for the thickest stretch of a pattern usually beats spending it the moment it lights up.
When fuel is gone, the hull breaks or the boss pops, the run closes and pays out. Credits feed a tech tree with forks and conversions, where grazes, spite and spare coins can all be turned into damage. Three weapons swap for free between flights: Guns that reward a close graze, a Turret Bay that drops turrets as the ship moves, and a Capacitor whose laser carves through patterns.
Controls
Steering is done by pointing. Moving the mouse carries the ship around the rim of the tunnel, and pointing on a touchscreen does the same. The weapon needs no input at all, so hands are free for the one button that matters: Space, or a tap on the LASER control, fires the laser once it is charged. Esc pauses, and a gamepad works as an alternative.
Options carry game speed, reduced motion, a no-flashes setting, high-contrast bullets, disabled screen shake, and volume for music and for effects. In a game about reading dense patterns, the bullet-contrast toggle plus the flash and shake controls do a lot of the work, and the speed setting adjusts the pace of play itself.
| Input | Action |
|---|---|
| Mouse | Point to move the ship around the ring; the weapon fires by itself |
| Touch | Point to move the ship around the ring |
| Space | Fire the laser once it is charged |
| LASER control | Tap to fire the laser once it is charged |
| Esc | Pause |
| Gamepad | Supported as an alternative input |
Tips for your first run
Spend the first flight learning one boss at a time, because each of the four asks for a different habit. Watch what the shape does before it fires, then decide whether the answer is a wider arc or a braver graze.
- The Sleepy Circle naps. Hit it while it snores for damage that costs nothing.
- The Sulky Square sulks, and its beams turn back, so mind the return trip.
- The Prickly Pentagon lays thorn mines. Let your own fire set them off instead of steering into them.
- The Huffy Hexagon puffs its cheeks and blows the ship around the ring, so expect your position to be taken from you.
- Hold the laser for the densest pattern rather than firing it into a thin spread.
- Swap weapons freely: Guns suit close grazing, the Turret Bay leaves turrets behind as the ship travels, and the Capacitor laser cuts patterns apart.
Content and replayability
The demo runs four bosses and then opens a Boss Rush through all four, which is the closest thing to a victory lap on offer. Three weapons can be swapped at no cost, so the same four fights can be attacked with a close-range gun, dropped turrets or a pattern-cutting capacitor.
Progression lives in the tech tree. Its forks and conversions turn grazes, spite and spare coins into damage, which means a clumsy run still pushes the ship forward. More than a hundred nodes gives the upgrade path a long runway.
A session runs roughly 20 to 30 minutes to the end of the demo before the Boss Rush begins. Still in development are more grumpy shapes watching from the dark, an Angry Mode and challenge runs.
Presentation and performance
The look is bright and cute, which sits oddly and deliberately beside a screen full of bullets from an angry shape. Each boss behaves according to its temper: one naps, one sulks, one lays thorn mines, one puffs its cheeks and blows the ship around the ring.
The build is HTML5 and runs in the browser. Accessibility toggles sit in Options: reduced motion, no flashes, high-contrast bullets, no screen shake, separate music and effects volume, and an adjustable game speed.
The demo sends anonymous play statistics covering how far a run got, how long it took and what was purchased, tied to a random id with no name and no account. It can be switched off in Options under Play statistics. The feedback form, opened with F8 or from the closing prompt, sends only what is written plus a picture of the game and the run's progress, and only when Send is pressed.
Who should play it
This is for players who like bullet hells more for the dance than the trigger. Nothing needs aiming, so the skill ceiling is spacing, grazing and knowing when to spend a charge. The incremental layer means a run that ends badly still leaves something behind in the tech tree.
It also suits short sessions: the demo is pitched at roughly 20 to 30 minutes to the finish, with a Boss Rush afterwards. Mouse, touch and gamepad all work, so the choice of input is not a barrier.
Anyone who prefers a finished, content-complete release should know the game is still in development, with an Angry Mode, challenge runs and further shapes on the way.
Screenshots
How we tested it
The build was loaded from games.debutplay.com in a headless Chromium session on ; the canvas started and no request was blocked. The guide was last checked on .
From the developer
Grumpy shapes. One ring. No mercy. Grumpy Geometry is a bullet hell on a ring, wrapped in an incremental game. You fly round the rim of a tunnel; at its heartsits a furious shape, throwing tantrums made of bullets. Your ship fires by itself: you choose where to be. Brush pastbullets to power up, save your laser for the thick of it, and make them pop. Every run ends (the fuel runs out, the hull breaks, or the boss falls) and every run pays. Spend your credits in a techtree of over a hundred nodes and fly out again with a meaner ship. In the demo - Four bosses, each with a temper of its own: the Sleepy Circle naps (hit it while it snores), the Sulky Square sulks (and its beams turn back), the Prickly Pentagon lays thorn mines that your fire sets off, and the Huffy Hexagon puffs its cheeks and blows you round the ring.- Three weapons, swapped for free: Guns that love a close graze, a Turret Bay that drops turrets as you move, and a…
Frequently asked questions
Is Grumpy Geometry free to play?
Yes. The demo costs nothing and runs as an HTML5 build in the browser, and it is still in development.
How long is the demo?
Roughly 20 to 30 minutes to reach the end, after which a Boss Rush runs through all four bosses.
Do you aim or shoot manually?
No. The ship's weapon fires by itself. The player controls movement around the ring and triggers the laser when it has charged.
How many bosses are in the demo?
Four: the Sleepy Circle, the Sulky Square, the Prickly Pentagon and the Huffy Hexagon. Further shapes are planned.
What happens to progress when a run ends?
Every run pays credits, whether it ends on empty fuel, a broken hull or a fallen boss. Credits go into a tech tree of over a hundred nodes with forks and conversions that turn grazes, spite and spare coins into damage.
Does the demo collect data?
It sends anonymous play statistics about how far a run got, how long it took and what was bought, attached to a random id with no name or account. This can be turned off in Options under Play statistics.
What games are similar to Grumpy Geometry?
The closest matches on DebutPlay are Last Stop, Chalk Galaxy, Canopy Breaker. They share the same genre, so the controls and the pace carry over.
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