Scamper

A first-person parkour tag game for the browser. You play as a little eraser-block person with stick limbs. Run, slide, wall-kick, and play with friends using a 4-letter join code.

Play

1. Open index.html in Chrome, Edge, or Firefox. Double-clicking the file works fine.
2. Pick a name, a body color and an eye color. One person clicks Host game and reads out the 4-letter code.
3. Everyone else types the code and clicks Join game.
4. The host presses Esc and goes to Lobby, picks a map and mode, then clicks Start round. Pressing Enter in-game also starts a round.

Each friend needs their own copy of the files, or you can put the folder online (see below) and send everyone the link. A link like index.html?code=MOKU pre-fills the code.

Settings (sensitivity, FOV, volume, invert Y...) and rebindable controls are on the main menu and in the Esc menu. Resolution adjusts itself when frames run slow; turn on Performance mode in Settings on slower computers (lower resolution, no shadows).

Default controls

Key	Action
W A S D	Move
Shift	Run (no stamina)
Space	Jump. In the air next to a wall, it's a wall kick toward where you're looking
C / Right click	Slide (when running fast) or crouch
(contact)	Run into someone to tag them (pass the bomb, steal the crown, catch the runner)
F	Talk (your head flaps open; everyone sees it)
Tab	Big leaderboard (a small one is always on the right)
R (hold)	Look behind you
Esc	Pause menu

Modes

• Bomb Tag: one player gets the bomb. Run into someone to pass it on (no instant pass-backs). When the fuse runs out, whoever holds it is out and spectates as a ghost; a new bomb drops on someone else. Last one standing wins. The fuse scales with the player count so a game takes 1.5-3.5 minutes; with 2 players each has 2 lives. The holder runs a little faster.
• King of the Tag: the king scores a point every second. Run into the king to steal the crown (a new king is safe for 2s). If the king falls off, the crown drops in the middle for anyone to grab. Most points wins. Chasers run a little faster.
• Duel (1v1): exactly 2 players taking turns to chase. Catch the runner before the timer ends to score, survive to score; falling off scores for your opponent. First to 3/5/7 wins. The chaser sees the runner's outline through walls and runs a little faster.
• (Race mode is switched off for now.) Race: everyone starts together on a race course. Get to the finish first. No checkpoints - fall off and you're back at the start. The leaderboard shows meters to go. After the first finisher, everyone else has 60 seconds.

CPUs: the host can add CPU players (Easy / Medium / Hard) in the Lobby tab of the pause menu, and remove them with the ×. They play every mode with the same movement as people. Easy CPUs only walk, hop and drop; Medium ones also mantle and use jump pads; Hard ones jump gaps, aim where you're heading, slide to close in, and flee toward spots they can reach before you.

Your stats (games, wins, tags...) are saved in your browser - see Stats in the main menu.

Maps

Floors are 4m apart everywhere, and jumps under low ceilings are capped, so you never bump your head. Orange walls are wall-kick routes.

Map	Setting	What it is
Rooftops	void	City roofs 4-24m over the void with 3m alleys you can kick up, fire escapes, kick signs, penthouses, sky bridges, pipes to slide under
Container Yard	sky + sea	Container piles up to 18m, container bridges, skewed containers, a solid crane with kick towers, pipe racks to slide under
The Corridors	indoor	Two floors of looping 3m hallways drawn from ASCII grids in the map file: vents, slide bars, kick shafts and stairwells
Fog	fog	A suburban street lost in thick fog: gable roofs, kick alleys, fences, trailers, a treehouse, a park with a merry-go-round
The Playhouse	indoor	One big play hall: a castle, a balloon room, a spiral climb tower, a slide hill and a play deck on three heights
Moon Base	space	Low gravity. Habitat modules and tubes on a floating rock split by a rift, a comm tower, a lander, a hangar
The Kitchen	indoor	You're tiny in a giant kitchen: drawer staircases, chairs to slide under, a toaster launch onto the fridge
The Test Lab	indoor	White test chambers around a frosted-glass atrium you can't wall-kick, crossed by bridges at two heights
The Clocktower	indoor	Spinning gears you ride (they turn your view), a pendulum, lifts, bells and glowing clock faces
The Skatepark	outdoor (walled)	A seaside skatepark: a big funbox with a slide tunnel, towers, corner platforms, ramps, containers
Bounce House	indoor	A long Z-shaped trampoline park: a bouncy runway down the middle, terraces stepping up both ends, a foam pit, bridges and a kick chimney
The Loop	fog	Endless: the map repeats forever - walk off one edge and you come in the other side

Level features: jump pads (glowing squares), moving platforms you can ride, spinning bars that shove you, and kick walls (always bright orange-red).

Put it online (optional)

Every file is static, so any static host will work: GitHub Pages, itch.io (upload a zip as an HTML game), or Netlify Drop.

Make it yours

File	What's in it
js/config.js	Every movement number (speed, air control, slide, wall kick, gravity), tag rules, default keys
js/map.js	The map kit: box (can be rotated), ramp, pad, stairs, slab, bridge, tower (multi-floor buildings), kickShaft, enclose (indoor box), pile / container (shipping containers). mover (moving/spinning boxes), balloons, wall (invisible). Maps pick env: 'void' / 'indoor' / 'sky' / 'fog' / 'space', can override movement (move: { gravity }), and race courses set kind: 'race'
js/maps/*.js	One file per map. Copy one to make your own, then add a <script> line for it in index.html. A map can list its own spots (spotlights)
js/character.js	The block character (body + hinged head, stick limbs) and its animation
js/player.js	Movement code
js/world.js	Collision, moving platforms, balloons, level features
js/game.js	Camera, HUD, menus, sounds, stats, and the rules for every mode
js/net.js	Lobbies and join codes
style.css	How the menus and HUD look

Some easy changes to try:

• More or less air control: airTurn in config.js.
• Longer slides: lower slideFriction.
• A stronger jump pad: raise its power. Height is roughly power² ÷ 52 meters.

How multiplayer works

The game uses PeerJS (WebRTC), so browsers connect to each other directly. The host's browser runs the rules: timer, who's IT, duel scores, falls, map changes, and checking tags. If the host leaves, the game ends.

• Keep the host's tab in the foreground. Background tabs get slowed down.
• Some strict networks (like some school or work Wi-Fi) block WebRTC. A phone hotspot usually works.
• To run your own PeerJS server, set peerServer in config.js.