Circuit Serpent

A hungry current loose on the motherboard. Eat. Grow. Don't cross yourself.

SCORE 0 LENGTH 3 BEST 0

CIRCUIT SERPENT

Guide the serpent to the glowing data packets. Every packet makes you longer and faster. Gold packets are worth five times more — but they don't wait around.

Swipe on touch screens · arrow keys or WASD on desktop

Tip: you can queue your next two turns — tap them in fast and the serpent takes the corner perfectly.

How to play

Circuit Serpent is the classic snake, rebuilt as a live circuit board. Steer the current, absorb data packets to grow, and survive as long as you can — the board speeds up as you get longer.

  • Desktop: arrow keys or WASD. Press P to pause.
  • Phone / tablet: swipe anywhere on the board in the direction you want to turn.
  • You can't reverse into yourself — the serpent ignores 180° turns.

Scoring

  • Data packet (green): +10 points, +1 length, and the current flows a little faster.
  • Gold packet: +50 points — but it appears rarely and vanishes after a few seconds. Detouring for gold is the whole risk/reward of the game.
  • Your best score is saved on your device (nowhere else — see our privacy policy).

Tips from the lab

  • Hug the walls early. An empty middle is escape room for later, when you're twenty segments long.
  • Plan exits, not entrances. Before you take a packet in a corner, know which way you're leaving.
  • Queue your turns. Two quick inputs make a clean U-turn; one late input makes a short circuit.

About this game

Circuit Serpent joins Sky Runner, Neon Breaker, Tile Fuse and Nova Strike in our arcade. Handwritten vanilla JavaScript on a single canvas — no engine, no framework, no tracking scripts, nothing to download.

We're Webmaster & More, a small web studio in Los Angeles. The arcade is our playground and our portfolio. Read the build notes on the dev log.

Strategy corner

Circuit Serpent looks like a marathon, but the hard part is front-loaded. Here's what our own high-score attempts taught us:

  • The speed ramp ends early. Each green packet quickens the current, but the board hits its top pace — a bit more than twice the starting speed — within your first handful of packets. Survive the opening stretch and the board never gets faster; after that, only your own growing body raises the difficulty.
  • Gold is nearly pure profit. A gold packet pays as much as five greens, adds just one segment, and doesn't speed the board up at all. Measured in points per inch of serpent, it's the best deal in the game — worth a detour almost every time.
  • Read the blink. Gold only shows up right after you grab a green, lives about five seconds, and starts flashing when it's about to vanish. If it's already blinking on the far side of the board, let it go — chasing dead gold is how long runs end.
  • Your tail tip is a door, not a wall. The last segment vacates its cell just as your head would arrive, so following directly behind your own tail is safe. Tight spirals that look suicidal are actually the pro escape route.

Quick questions

  • Does it work offline? The game is one self-contained page — after it loads, nothing more needs to be fetched, so it keeps running even if your connection drops mid-game. Loading the page in the first place still needs internet.
  • Is my score saved anywhere? Your best score lives in local storage on your own device, and nowhere else. No accounts, no online leaderboards, no server — so clearing site data or playing in a private window starts you from zero.
  • Does it run on phones? Yes — swipe anywhere on the board in the direction you want to turn. It's the same board and the same speed curve you get on desktop with arrow keys or WASD.
  • What if I get interrupted? Press P to pause on desktop, and the game pauses itself automatically whenever the tab loses focus. Your serpent will be waiting exactly where you left it.