Fold Spacer
A molecular flight

From nature. Into flight.

A world
within.

Fly through a protein.
Restore its shape, one side chain at a time.

Your own protein?
Drop a .pdb or .cif file anywhere.

10 folds. N to C.Inspired by structures from the Protein Data Bank.

How to fly

Follow the protein from N- to C-terminus. Fly into pulsing side chains to restore them. A dead-centre hit scores double; a sequence of hits builds your combo.

Steer
Arrow keys or WASD. Hold two directions to fly diagonally. Tap to nudge; release to centre.Touch and drag anywhere. Release to return to the centre; a quick flick lunges toward a side chain.
Boost
Hold Shift or Space.Hold Boost at the bottom right, or use a second finger.
Brake
Hold Ctrl to slow down and turn harder.Hold Brake at the bottom left to slow down and turn harder.
Barrel roll
Double-tap the left or right arrow.Make a hard sideways flick. Walls only graze you while you are over.

Ride the edge of the corridor to build slipstream speed. Cofactors sit out by the wall: fly through the ring of pips beside one to claim it. A ghost of your best run flies alongside you.

The music grows with clean hits and slipstream: a quiet chord becomes a bass pulse and melody. Each cofactor has a musical invitation; claiming it sends a soft colour ripple through nearby ribbon. Music and effects share the Sound toggle (M), and pause when you leave the game.

Use the ⋯ menu for sound, autopilot, colours, or another fold. Shortcuts: M sound · P autopilot · C colours · L touch mode · R restart · N next fold.

The molecule & its colours
α-helix — fly inside the coilβ-sheet — weave over the surface, collecting side chainsLoops connect the folded elements

Side chains use Clustal X colours. Their ball-and-stick shapes come from real heavy-atom coordinates. Drop your own .pdb or .cif file onto the game to fly its structure.

AILMFWVKRDENQSTCGPHY

This is a playful interpretation of a folded protein. Inward side chains are deliberately displaced for you to repair. The tutorial bundle is synthetic and uses side-chain templates from real structures.

Structures from the RCSB Protein Data Bank, with authors credited on each fold. Secondary structure by P-SEA (Labesse et al., 1997). Side-chain colours after Clustal X (Thompson et al., 1997). Craft and ribbon renderer from Fold Racer.