Original 2D tutorial game. Collect at least six original repair crystals, jump over hazards and reach the beacon. Concept artwork in the guide shows a possible future art direction.
Ready. Press Start.
Lives 3 · Energy 100 · Cells 0 · Time 0
A/D or arrows · Space to jump · Shift to boost · P to pause. Leaving the tab pauses the game. Restart makes a fresh run; your local best is separate.
FILE: world.mjs
// Original, independently written public tutorial. MIT, 2026 BINX Forge.
export const WIDTH=960,HEIGHT=480,GOAL=2260;
export const platforms=[{x:0,y:404,w:540,h:76},{x:540,y:382,w:540,h:98},{x:1080,y:404,w:470,h:76},{x:1550,y:366,w:500,h:114},{x:2050,y:404,w:350,h:76}];
export const hazards=[{x:400,y:380,w:34,h:24},{x:920,y:358,w:34,h:24},{x:1420,y:380,w:34,h:24},{x:1820,y:342,w:34,h:24}];
const overlap=(a,b)=>a.xb.x&&a.yb.y;
export function fresh(){return {status:'ready',time:0,lives:3,energy:100,cells:0,player:{x:70,y:368,w:24,h:36,vx:0,vy:0,grounded:true},checkpoint:70,collected:[],camera:0,coyote:.1,buffer:0,jumpHeld:false,immune:0,message:'Reach the oasis beacon. Jump over red drones; collect teal cells.'};}
export function start(s){if(s.status==='ready'||s.status==='paused')s.status='running';}
export function pause(s){if(s.status==='running'){s.status='paused';s.jumpHeld=false;s.buffer=0;}}
export function damage(s){if(s.status!=='running'||s.immune>0)return;s.lives--;if(s.lives<=0){s.status='lost';s.message='Out of lives. Restart the route.';return;}const p=s.player;p.x=s.checkpoint;p.y=s.checkpoint<1000?368:368;p.vx=p.vy=0;p.grounded=false;s.immune=1.4;s.energy=Math.max(s.energy,35);s.message='Checkpoint recovered. Your collected cells are safe.';}
function tick(s,input,dt){
const p=s.player;s.time+=dt;if(s.time>=60){s.time=60;s.status='lost';s.message='Time expired. Try a cleaner route.';return;}
s.immune=Math.max(0,s.immune-dt);s.buffer=Math.max(0,s.buffer-dt);s.coyote=p.grounded?.1:Math.max(0,s.coyote-dt);
const dir=Number(!!input.right)-Number(!!input.left),boost=!!input.boost&&dir!==0&&s.energy>0;
s.energy=Math.max(0,Math.min(100,s.energy+(boost?-38:16)*dt));
const target=dir*(boost?460:260),rate=dir?1400:1700;p.vx+=Math.max(-rate*dt,Math.min(rate*dt,target-p.vx));
if(s.buffer>0&&s.coyote>0){p.vy=-570;p.grounded=false;s.coyote=0;s.buffer=0;}
if(!input.jump&&p.vy<-260)p.vy=-260;
p.vy=Math.min(820,p.vy+1500*dt);const oldBottom=p.y+p.h;
p.x=Math.max(0,Math.min(2370,p.x+p.vx*dt));
for(const q of platforms){if(overlap(p,q)){if(p.vx>0)p.x=q.x-p.w;else if(p.vx<0)p.x=q.x+q.w;p.vx=0;}}
p.y+=p.vy*dt;p.grounded=false;
for(const q of platforms){if(overlap(p,q)){if(p.vy>=0&&oldBottom<=q.y+2){p.y=q.y-p.h;p.vy=0;p.grounded=true;}else if(p.vy<0){p.y=q.y+q.h;p.vy=0;}}}
for(let i=0;i<12;i++){const c={x:200+i*165,y:(i>=3&&i<=5?280:i>=9&&i<=10?260:316),w:20,h:20};if(!s.collected.includes(i)&&overlap(p,c)){s.collected.push(i);s.cells++;s.energy=Math.min(100,s.energy+24);}}
if(p.x>=1140&&p.grounded)s.checkpoint=1140;
if(p.y>HEIGHT+100||hazards.some(h=>overlap(p,h)))damage(s);
if(p.x>=GOAL&&s.cells>=6&&s.status==='running'){s.status='won';s.message='Oasis reached! '+s.cells+' energy cells, '+s.time.toFixed(2)+' seconds.';}
if(p.x>=GOAL&&s.cells<6&&s.status==='running')s.message='Collect six crystals before the beacon can be restored. Backtrack safely.';
s.camera=Math.max(0,Math.min(1440,p.x-280));
}
export function advance(s,input={},elapsed=0){if(s.status!=='running'||!Number.isFinite(elapsed)||elapsed<=0)return;const rising=!!input.jump&&!s.jumpHeld;s.jumpHeld=!!input.jump;if(rising)s.buffer=.13;let left=Math.min(elapsed,.1);for(let i=0;i<12&&left>1e-9&&s.status==='running';i++){const dt=Math.min(left,1/120);tick(s,input,dt);left-=dt;}}
export function readBest(raw){try{const s=JSON.parse(raw);return s?.version===1&&Number.isFinite(s.best)&&s.best>0&&s.best<=60&&Number.isInteger(s.cells)&&s.cells>=0&&s.cells<=12?{version:1,best:s.best,cells:s.cells}:null;}catch{return null;}}
FILE: render.mjs
import {WIDTH,HEIGHT,platforms,hazards,GOAL} from './world.mjs';
export function render(ctx,s,{reduced=false}={}){
ctx.clearRect(0,0,WIDTH,HEIGHT);const bg=ctx.createLinearGradient(0,0,0,HEIGHT);bg.addColorStop(0,'#37485d');bg.addColorStop(1,'#b19261');ctx.fillStyle=bg;ctx.fillRect(0,0,WIDTH,HEIGHT);
for(let i=0;i<8;i++){const x=i*180-s.camera*.22;ctx.fillStyle=i%2?'#215364':'#296577';ctx.beginPath();ctx.moveTo(x,420);ctx.lineTo(x+90,170+(i%3)*38);ctx.lineTo(x+190,420);ctx.fill();}
ctx.save();ctx.translate(-s.camera,0);
for(const q of platforms){ctx.fillStyle='#173840';ctx.fillRect(q.x,q.y,q.w,q.h);ctx.fillStyle='#ae9a66';ctx.fillRect(q.x,q.y,q.w,10);for(let i=0;i=3&&i<=5?290:i>=9&&i<=10?270:326);ctx.fillStyle='#ffc367';ctx.beginPath();for(let j=0;j<6;j++){const a=j*Math.PI/3;ctx.lineTo(x+12*Math.cos(a),y+12*Math.sin(a));}ctx.closePath();ctx.fill();}
for(const h of hazards){ctx.fillStyle='#fd7977';ctx.fillRect(h.x,h.y,h.w,h.h);ctx.fillStyle='#271e35';ctx.fillRect(h.x+5,h.y+7,7,7);ctx.fillRect(h.x+22,h.y+7,7,7);}
ctx.fillStyle='#fbc86e';ctx.fillRect(1140,318,6,86);ctx.fillRect(1146,318,50,26);ctx.fillStyle='#83ffdf';ctx.fillRect(GOAL+20,280,8,124);ctx.beginPath();ctx.arc(GOAL+24,272,24,0,Math.PI*2);ctx.fill();
const p=s.player,phase=reduced?0:Math.sin(s.time*22)*(p.grounded?Math.min(1,Math.abs(p.vx)/260):.3);ctx.save();ctx.translate(p.x+p.w/2,p.y+p.h/2);if(s.immune>0&&!reduced&&Math.floor(s.time*12)%2)ctx.globalAlpha=.45;
ctx.fillStyle='#ffb958';ctx.fillRect(-9,-6,18,21);ctx.fillStyle='#f6d7b0';ctx.fillRect(-7,-19,14,14);ctx.fillStyle='#1d2933';ctx.fillRect(-8,-20,17,5);ctx.fillStyle='#ff754b';ctx.fillRect(-10,-4,25,5);ctx.fillRect(-22,-4+(reduced?0:phase*2),18,4);ctx.fillStyle='#6bffe8';ctx.fillRect(-9,14,7,7+phase*4);ctx.fillRect(3,14,7,7-phase*4);ctx.restore();ctx.restore();
ctx.fillStyle='rgba(5,20,29,.85)';ctx.fillRect(18,18,325,70);ctx.fillStyle='#e5fff7';ctx.font='bold 18px sans-serif';ctx.fillText('SUNFORGE TRAIL',32,44);ctx.font='14px sans-serif';ctx.fillText('Energy '+Math.round(s.energy)+' • Cells '+s.cells+' • Lives '+s.lives,32,72);
if(s.status!=='running'){ctx.fillStyle='rgba(3,15,24,.72)';ctx.fillRect(0,HEIGHT/2-42,WIDTH,84);ctx.fillStyle='#fff5dd';ctx.textAlign='center';ctx.font='bold 25px sans-serif';ctx.fillText(s.status==='ready'?'Ready for a wind-run?':s.status==='paused'?'Paused':s.status==='won'?'Oasis reached!':'Try again',WIDTH/2,HEIGHT/2+8);ctx.textAlign='left';}
}
FILE: main.mjs
import {fresh,start,pause,advance,readBest} from './world.mjs';
import {render} from './render.mjs';
const canvas=document.getElementById('game'),ctx=canvas.getContext('2d'),status=document.getElementById('status'),hud=document.getElementById('hud'),bestNode=document.getElementById('best'),sound=document.getElementById('sound'),motion=matchMedia('(prefers-reduced-motion: reduce)');
let state=fresh(),last=0,audio=null,saved=false;const keyboard=new Set(),pointers=new Map(),keyMap={ArrowLeft:'left',KeyA:'left',ArrowRight:'right',KeyD:'right',Space:'jump',ShiftLeft:'boost',ShiftRight:'boost'},saveKey='forge.sunforge.best.v1';
let best=null;try{best=readBest(localStorage.getItem(saveKey));}catch{}
function showBest(){bestNode.textContent=best?'Local best: '+best.best.toFixed(2)+'s · '+best.cells+' cells. Stored only in this browser.':'No saved local best yet.';}showBest();
function clear(){keyboard.clear();pointers.clear();state.jumpHeld=false;state.buffer=0;}
function message(){status.textContent=state.message;}
function tone(){if(!sound.checked)return;try{audio??=new AudioContext();if(audio.state==='suspended')return;const o=audio.createOscillator(),g=audio.createGain();o.frequency.value=680;g.gain.setValueAtTime(.035,audio.currentTime);g.gain.exponentialRampToValueAtTime(.0001,audio.currentTime+.07);o.connect(g).connect(audio.destination);o.start();o.stop(audio.currentTime+.08);o.onended=()=>{o.disconnect();g.disconnect();};}catch{sound.checked=false;}}
sound.addEventListener('change',async()=>{if(sound.checked){try{audio??=new AudioContext();await audio.resume();tone();}catch{sound.checked=false;}}});
document.getElementById('start').addEventListener('click',()=>{clear();start(state);state.message='Collect six crystals and reach the beacon. Jump over red hazards.';message();canvas.focus();});
document.getElementById('pause').addEventListener('click',()=>{pause(state);clear();state.message='Paused. Press Resume.';message();});
document.getElementById('restart').addEventListener('click',()=>{clear();state=fresh();start(state);saved=false;message();canvas.focus();});
canvas.addEventListener('keydown',e=>{if(keyMap[e.code]){e.preventDefault();keyboard.add(keyMap[e.code]);}if(e.code==='KeyP'&&!e.repeat){pause(state);clear();state.message='Paused. Press Resume.';message();}});
window.addEventListener('keyup',e=>{if(keyMap[e.code])keyboard.delete(keyMap[e.code]);});
canvas.addEventListener('blur',()=>{keyboard.clear();state.jumpHeld=false;state.buffer=0;});
for(const b of document.querySelectorAll('[data-key]')){b.addEventListener('pointerdown',e=>{e.preventDefault();b.setPointerCapture(e.pointerId);pointers.set(e.pointerId,b.dataset.key);});for(const name of ['pointerup','pointercancel','lostpointercapture'])b.addEventListener(name,e=>pointers.delete(e.pointerId));}
function hidden(){if(document.hidden){clear();pause(state);state.message='Paused while away. Press Resume.';message();}}
document.addEventListener('visibilitychange',hidden);window.addEventListener('blur',()=>{clear();pause(state);message();});window.addEventListener('pagehide',()=>{clear();pause(state);audio?.suspend();});
function frame(now){const dt=last?(now-last)/1000:0;last=now;const input=Object.fromEntries([...keyboard,...pointers.values()].map(k=>[k,true])),cells=state.cells,phase=state.status;advance(state,input,dt);if(state.cells>cells)tone();if(phase!==state.status)message();render(ctx,state,{reduced:motion.matches});hud.textContent='Lives '+state.lives+' · Energy '+Math.round(state.energy)+' · Cells '+state.cells+' · Time '+state.time.toFixed(1)+' / 60s';
if(state.status==='won'&&!saved){saved=true;if(!best||state.timea-x>0&&a-x<85);if(s.player.grounded&&near&&held<=0)held=.18;advance(s,{right:true,jump:held>0},1/rate);held-=1/rate;}return s;}
check('actual route wins at 15/30/60/120 simulated updates',()=>{for(const rate of [15,30,60,120]){const s=drive(rate);assert.equal(s.status,'won');assert.ok(s.player.x>=GOAL);assert.equal(s.lives,3);assert.ok(s.cells>=6);assert.ok(s.time<10);}});
check('invalid elapsed time cannot mutate a run; long stalls are capped',()=>{const s=fresh();start(s);const old=JSON.stringify(s);for(const t of [NaN,Infinity,-1,0])advance(s,{right:true},t);assert.equal(JSON.stringify(s),old);advance(s,{right:true},9);assert.ok(s.time<=.100001);assert.ok(s.player.x<90);});
check('boost drains bounded energy and raises movement speed',()=>{const a=fresh(),b=fresh();start(a);start(b);for(let i=0;i<30;i++){advance(a,{right:true},1/120);advance(b,{right:true,boost:true},1/120);}assert.ok(b.player.x>a.player.x);assert.ok(b.energy=0&&b.energy<=100);});
check('jump button hold does not repeatedly jump in midair',()=>{const s=fresh();start(s);advance(s,{jump:true},.05);const before=s.player.vy;advance(s,{jump:true},.05);assert.ok(s.player.vy>before);assert.ok(!s.player.grounded);});
check('pickups award once even after reentering the same cell',()=>{const s=fresh();start(s);s.player.x=200;s.player.y=310;advance(s,{},1/120);assert.equal(s.cells,1);s.player.x=200;s.player.y=310;advance(s,{},1/120);assert.equal(s.cells,1);});
check('damage recovers checkpoint once and preserves collected cells',()=>{const s=fresh();start(s);s.checkpoint=1140;s.cells=2;s.collected=[1,2];damage(s);assert.equal(s.lives,2);assert.equal(s.player.x,1140);assert.equal(s.cells,2);damage(s);assert.equal(s.lives,2);s.immune=0;damage(s);s.immune=0;damage(s);assert.equal(s.status,'lost');});
check('pause, win and loss freeze simulation and restart is independent',()=>{for(const mode of ['paused','won','lost']){const s=fresh();s.status=mode;const old=JSON.stringify(s);advance(s,{right:true,jump:true,boost:true},.1);assert.equal(JSON.stringify(s),old);}const a=drive(60),b=fresh();assert.equal(b.cells,0);assert.equal(b.lives,3);assert.notEqual(a.player,b.player);start(b);pause(b);assert.equal(b.status,'paused');});
check('timeout ends exactly at sixty simulated seconds',()=>{const s=fresh();start(s);s.time=59.99;advance(s,{},.1);assert.equal(s.time,60);assert.equal(s.status,'lost');});
check('local best accepts only versioned bounded values',()=>{assert.deepEqual(readBest('{"version":1,"best":8.8,"cells":9}'),{version:1,best:8.8,cells:9});for(const raw of ['',null,'{}','{"version":2,"best":8,"cells":2}','{"version":1,"best":999,"cells":1}','{"version":1,"best":8,"cells":13}','{"version":1,"best":0,"cells":0}'])assert.equal(readBest(raw),null);});
check('beacon requires six accepted crystals',()=>{const s=fresh();start(s);s.player.x=GOAL;advance(s,{},1/120);assert.equal(s.status,'running');s.cells=6;s.collected=[0,1,2,3,4,5];advance(s,{},1/120);assert.equal(s.status,'won');});
console.log(passed+' rules checks passed; browser/phone/audio/clipboard acceptance is separate.');
## MAKE YOUR GAME EVEN BETTER
Beginner: Readable landings and original animations
Inspect Sunforge Trail's working source and current dimension first. Preserve connected terrain, traversal and persistent objectives and the complete outcome. Improve readable UI and animations using compatible free files only. In a 3D adaptation verify rig names, scale, frame rate and root-motion ownership; a 2D Canvas game cannot import a humanoid rig automatically. Add capped feedback, low-effects/reduced-motion mode and retest the original win/loss, pause and ten restarts. Keep licence notices and report executed checks.
Resources: https://binxforge.com/resources/kenney-ui-pack, https://binxforge.com/resources/quaternius-universal-animation-library
Intermediate: A second connected area and traversal tool
Preserve Sunforge Trail's accepted loop. Add one physically connected original area with a bounded traversal tool. Reuse compatible public engine systems first. All objective IDs stay unique; no skipped completion, repeated damage or unsafe spawn. Add a small versioned progress record with known IDs and denied/corrupt-storage handling. Test one full old and new scenario, pause/reload and two restarts. Do not claim a proposed 3D feature is present in the 2D reference.
Resources: https://binxforge.com/resources/godot, https://binxforge.com/resources/kaykit-adventurers, https://binxforge.com/resources/kenney-ui-pack
Advanced: 3D camera, moving terrain and bounded streaming
Inspect my selected engine/version, platform and current working project. Develop Sunforge Trail's fuller 3D direction with complete scene/code files, collision-aware camera, compatible rig setup and a measured actor/effects budget. Reuse native physics/navigation/animation and permitted public code first. Prove moving-platform carry and connected traversal before streaming; keep collision and render scale consistent. Cloud saves, multiplayer or mod support are separate scoped upgrades with compatibility and security work. Profile actual desktop and phone; report executed import, gameplay and export checks separately from open acceptance.
Resources: https://binxforge.com/resources/godot, https://binxforge.com/resources/quaternius-universal-animation-library, https://binxforge.com/resources/kaykit-adventurers
## Sources
Original creator repository: https://github.com/open-goal/jak-project
Checked release or releases status: https://github.com/open-goal/jak-project/releases/tag/v0.3.8
Original source/licence status: https://github.com/open-goal/jak-project/blob/master/LICENSE
Official technical overview: https://opengoal.dev/docs/intro/
Project methodology: https://github.com/open-goal/jak-project#methodology
Official current status: https://github.com/open-goal/jak-project#current-status
Godot licence: https://godotengine.org/license/
Godot CharacterBody3D: https://docs.godotengine.org/en/stable/classes/class_characterbody3d.html
Godot third-person camera obstruction: https://docs.godotengine.org/en/stable/tutorials/3d/spring_arm.html
KayKit Adventurers: https://kaylousberg.itch.io/kaykit-adventurers
Universal Animation Library: https://quaternius.itch.io/universal-animation-library