PHYSICS · STACK · COMING SOON
HEFT
A game about weight, balance, and the satisfying click of a clean drop. Built for one-handed play in spare moments.
What HEFT is.
One tap · real weight · no catchesHEFT is a one-tap, physics-based tower stacker. A block drifts across the top of the screen; tap to drop it. Box2D simulates real weight, friction, and balance, so every drop is the satisfying click of a clean landing, or the slow-motion lean of a tower about to go. The higher you build, the more the sky shifts and the weather closes in.
Stack forever in Endless, push your luck up the Ascent roguelike climb and bank your gains run by run, race the clock in Time Attack, survive one mistake in Hardcore, fill a silhouette in Blueprint, clear rows in physics line-clear Cascade, or breathe in no-fail Zen · seven modes in all, plus 30 hand-tuned missions and the daily challenge. Ten materials (concrete, steel, glass that shatters, ice that slides, gold worth double) unlock as you climb higher, each with its own real-world feel.
When a tower starts to lean, deploy an engineer's toolkit - ballast, mortar, keystones and more - to hold it together; brace against wind, tremors and a swinging wrecking ball; chain clean drops for a flow multiplier. And when it finally goes, it goes - real load-bearing failure brings it down in slow-motion catastrophe.
Free, no paywalls. Every mission, every material, every mode unlocks through play, with no banner ads. One optional purchase removes the ads · nothing else is ever locked behind money. Built for one-handed play in spare moments, on iPhone and Android.
What ships in the box.
Three load-bearing systems · verified on deviceReal Physics
Box2D under the hood. Concrete, steel, glass, ice, wood · each material falls, slides, and shatters with its own feel.
Modes for every mood
Endless, the Ascent roguelike climb, Time Attack, Hardcore, Blueprint, line-clearing Cascade and calm Zen - plus thirty hand-tuned missions and daily challenges. One tap to drop.
Premium-Feel · Free
Haptics on every landing. Procedural audio that gives way to real clips. Every mission and material is free · no paywalls, no banner ads. One optional purchase just removes the ads.
Ten materials. Unlocked by altitude.
Each enters the rotation as you climb · Density · Friction (φ) · Restitution (e)| Material | Density (kg/m³) | φ Friction | e Restitution | Signature |
|---|---|---|---|---|
| Concrete↑0m | 2400 | 0.70 | 0.02 | The foundation |
| Steel↑5m | 7850 | 0.45 | 0.08 | Heavy · slick |
| Wood↑12m | 700 | 0.70 | 0.35 | Light · forgiving |
| Rubber↑20m | 1100 | 0.90 | 0.60 | Bouncy · grippy |
| Glass↑30m | 2500 | 0.30 | 0.10 | Shatter · ×1.5 |
| Ice↑42m | 917 | 0.15 | 0.05 | Slip |
| Stone↑55m | 2700 | 0.85 | 0.02 | Dead-weight anchor |
| Foam↑70m | 50 | 0.90 | 0.00 | Weightless · no bounce |
| Gold↑85m | 19300 | 0.50 | 0.05 | Dense · ×2 score |
| Obsidian↑100m | 2600 | 0.18 | 0.08 | Slick + heavy · ×1.75 |
Original music. Every track.
Composed by Amrudin Catic- Concrete Bloom
- Night Drive
- Arena y Vino
- Weightless
- Summer Wind
- Somewhere Forward
- You & I
- The Shift
- Talking
- What I Said
- First Sunday
- Clear
- Let It Be Enough
Tracks play on shuffle, so no two runs sound the same.
Find the full soundtrack at music.amrudincatic.comThe weight has to feel real, or none of it matters.Build directive · Wave 0
Questions, answered.
The essentialsWhat is HEFT?
HEFT is a free, physics-based tower-stacking game for iOS and Android. A block drifts across the top of the screen and you tap once to drop it. A Box2D physics engine simulates real weight, friction and balance, so every drop is either the satisfying click of a clean landing or the slow lean of a tower about to fall. Ten materials, from concrete and steel to glass that shatters and gold worth double, unlock as you climb higher, and seven modes plus 30 hand-tuned missions give you a reason to keep building.
Is HEFT free?
Yes. Every mode, all 30 missions and all 10 materials unlock through play, with no paywalls and no banner ads. HEFT is supported by an occasional full-screen ad between runs, plus an optional rewarded ad you can choose to watch to save a fallen tower. If you would rather not see the interstitials, one optional purchase removes the ads. It unlocks nothing else, because every mode, mission and material is already free. Nothing is ever locked behind money: no premium tier, no currency, no loot boxes.
What can you play in HEFT?
Seven modes, each a different mood. Endless is the open-ended climb; Ascent is a roguelike where you bank or push your luck up escalating altitude segments; Time Attack races the clock; Hardcore ends on a single mistake; Blueprint asks you to fill a silhouette; Cascade is a physics line-clear where filled rows slice out and chain; and Zen is a no-fail sandbox. On top of that, 30 hand-tuned missions across six difficulty tiers and a daily challenge with streak tracking. Ten materials unlock by altitude, each with its own real-world weight and behaviour.
When does HEFT launch?
HEFT is coming soon to iPhone and Android; there is no public release date yet. It is built and tuned for one-handed play in spare moments, runs on Unity 6 with a Box2D physics core, and ships in six languages: English, Spanish, Portuguese, Bosnian, Japanese and German. App Store and Google Play links will appear here as soon as the listings are live, so this is the page to check back on for availability.