Flipcraft

September 5, 2026 · View on GitHub

A real first-person voxel survival sandbox for the Flipper Zero, rendered in true 3D on its 128x64 one-bit screen. You walk through a procedurally generated world, chop trees, dig for coal and iron, smelt ingots and glass, craft tools at a crafting table, build with placed blocks, stash loot in chests, tame a wolf and try to outlive creepers and your own dynamite.

Flipcraft is an independent project by ApertureFox Technology, written from scratch for this device: a software rasterizer with a depth buffer, cached chunk meshes, traced sun shadows and a world that streams from the SD card and never has to fit in memory at once.

Worlds

Every world grows from a text seed in one of four sizes, from 128x128 up to 1024x1024 blocks: forests, deserts, ravines, coal and iron veins, and one house with a stocked chest somewhere on the map. Terrain is a pure function of the seed and the coordinates, so the same seed gives the same landscape at every size, and the generator works tile by tile without ever holding the whole map.

A world is a single .fcw file on the SD card. It holds the blocks, the player, the inventory and health, and the contents of every chest and furnace. Any number of worlds can be created, renamed, inspected, given new settings and deleted from the menu; bundled template worlds ship with the app.

Each world carries its own settings, chosen at creation and editable later:

Setting	Options
Gamemode	Survival - respawn on death. Hardmode - death deletes the world. Creative - infinite blocks from a picker, no damage, no drops.
Mobs	on / off
Shaders	Sunlight is traced through the world block by block, glass included. Shadows are drawn as clean outlines, so textures stay exactly as drawn in light and in shade.
Draw distance	Far renders the whole 3x3 chunk ring around you. Near renders only the chunk you stand in and is the lightest mode in RAM and time.

Gameplay

17 block types: grass, dirt, stone, cobblestone, sand, logs, leaves, planks, glass, coal and iron ore, saplings that grow into trees, crafting table, furnace, chest and dynamite.
3x3 crafting: pickaxes, axes, shovels and swords in wood, stone and iron tiers, shears, sticks, planks, glass and the stations themselves. The right tool mines its material fast; the wrong one still works, slowly, and yields nothing.
Furnace smelting: iron ore into ingots, sand into glass, fueled by coal, wood or wooden tools. Furnaces keep working while you are away, as long as you stay in the neighbourhood.
Chests keep their contents in the world file. A creeper blast destroys a chest together with everything in it.
Eight hearts, fall damage, apples to heal.

Creatures

Four species share the world. Every creature has two hit points: any sword kills in one hit, hands or tools in two. A hurt creature flashes for a second. Creatures are not saved with the world.

Sheep - passive, grazes, flees when hit. Drops an apple.
Wolf - neutral until you hit it, then it bites back for one heart. Wolves hunt sheep and creepers on their own; against a creeper a wolf bites and springs away, but sometimes lingers too long and the blast takes both. Drops an apple.
Creeper - hostile. Stalks you from up to six blocks, freezes next to its target, flashes and swells for two seconds, then explodes: a 3x3x3 crater and about 90% of max health to anyone within 2.5 blocks. Run more than four blocks away to disarm it. Drops gunpowder on any death.
Bee - a small neutral flyer that hovers above the ground and drops a sapling when killed.

Hold OK on a wild wolf while carrying two apples to tame it. A tamed wolf never bites you, follows within three blocks and guards you: it still pounces on sheep and creepers by itself.

Dynamite

One sand next to one gunpowder in the crafting grid makes a stick of dynamite. Placed, it is harmless. A short press of OK lights the fuse: it flashes for about three seconds, falls if unsupported, then explodes like a creeper. The blast ignites any adjacent dynamite with a short random delay, so charges can be lined up into a chain reaction. A long press breaks an unlit charge back into the item.

Controls

In the world:

Key	Action
Up / Down	walk forward / backward
Left / Right	turn
OK + Up / Down	look up / down
OK + Left / Right	previous / next hotbar slot; in Creative, scroll the block palette
OK short	place a block, use the crafting table, furnace or chest, light dynamite, or hit the creature in front of you
OK long	mine or break the targeted block; on a wild wolf, tame it
Back short	jump
Back long	open the inventory; in Creative, the block picker
OK + Back	save and quit to the menu

Creatures are forgiving to aim at: anything near the crosshair counts. Blocks need the crosshair itself.

In the inventory, crafting, furnace and chest screens:

Key	Action
Arrows	move the cursor
OK	pick up a stack, put it down, or take the crafted or smelted output
OK + arrow	drop one item from the held stack into each slot you cross
Back	close

In the menu the arrows move, OK confirms and Back returns.

How it works

The app is split into a tiny resident host and three plugins that are loaded from the SD card only while needed: the menu, the game and the world generator. Only the part you are using occupies RAM.

The world is stored in 8x16x8 chunks; the game keeps a 3x3 ring of them around the player, streaming one chunk per tick from the SD card in file order and writing edited chunks back during quiet moments. Each resident chunk is turned into a compact list of visible faces once, and that list is what a frame draws: no voxel is scanned and no ray is cast per frame. The rasterizer keeps colour and a 7-bit depth in the same byte, so one 8 KB buffer is both the framebuffer and the z-buffer, and it samples textures with perspective correction every eight pixels.

With shaders on, a fixed sun at 50 degrees is traced through the voxel grid when a chunk is built: five probe rays settle uniform faces, and only faces the shadow edge cuts through pay for a full 8x8 per-texel mask. Glass stops light only where its frame has ink. When a block changes, faces whose rays cannot reach the edited cells keep their previous bake, so an edit costs a few dozen rays instead of a whole chunk. Shadows are then drawn as the outline of their silhouette, never as a pattern over the texture.

Building

The easiest way is qUnleashed Desktop and its Flibler tool (Tools > Flibler): point it at this repository, either the Git URL or a local folder, pick the firmware channel, and it builds the .fap on your computer when the SDK and toolchain are ready, or on the build server otherwise, and can install it straight onto the connected Flipper.

The manual way is the firmware's build tool. Put the repository in applications_user/ of an Unleashed (or compatible) firmware tree and run:

./fbt fap_flipcraft

Either way the .fap embeds the three plugins and unpacks them to /ext/apps_assets/flipcraft/plugins/ on first launch.

tools/ holds host-side helpers: hostgen.cpp generates a world on a PC with the same code the device uses, mapview.py renders a .fcw as an image, and keyart.py draws the store key art from a scene the engine could produce.

Donation

Service	Remark	QR Code	Link
Boosty	Support the project		boosty.to/apfxtech/donate
YooMoney	RU payments only		yoomoney.ru/fundraise/1IV33POM6H4.260711