SynergyTower

A pixel-art, 2.5D browser game about climbing the corporate ladder. You start as a new hire at the bottom of a 40-floor tower, walk each floor, do office chores as mini-games, earn currencies and get promoted floor by floor until you become CEO.

• 33 mini-games (spreadsheets, inbox triage, reply-all storms, expense reports, karaoke at the office party...), some of them played across the whole floor (track down a colleague for their 360 review, hunt the whiteboards for your lost password)
• An HR performance review gates every promotion
• A daily stand-up favour with a streak bonus, random office events (fire drills, printer meltdowns, office cake, surprise audits), a desk that moves with you, with a new decoration shop on every floor, and 35 badges on the badge wall
• Collect paperclips, chat with colleagues, poke around the workstation terminals (some commands are more useful than others), and once you are CEO, decide who stays
• All art is drawn in code and all music and sound is synthesized with WebAudio: no external assets
• Works offline (service worker)

The illustrated player guide is at synergytower.co.uk/how-to-play/ (source: public/how-to-play/).

Running it

Requires Bun 1.3. There are no npm dependencies.

bun run dev      # dev server with hot reload → http://localhost:5317
bun run build    # static offline-capable build → dist/
bun run preview  # serve dist/ → http://localhost:4317
bun test         # unit + headless smoke tests

Tech

Vanilla ES modules and Canvas 2D at a fixed 480×270 logical resolution, integer-scaled. Core game logic in src/core/ is pure (no DOM) so it can be ported later. See CLAUDE.md for the architecture and docs/superpowers/specs/ for the design spec.

Payments in the game are fake and labelled DEMO.

Privacy

The game is played at synergytower.co.uk. It sets no cookies and has no accounts.

• Your save stays in your browser (localStorage). It is never uploaded.
• Analytics use two cookieless services: Cloudflare Web Analytics counts page visits, and Umami counts visits plus a few anonymous gameplay events (career started, mini-game played with its stars, HR review passed or failed, promotion with the floor number, poster opened, feedback form opened or sent, coffee link clicked, lobby check-in done with its stars, lobby turnstiles passed, daily stand-up done with its stars and streak, office event won or lost, desk decoration bought, badge unlocked, reminders switched on or shown, shop and demo checkout opened, pretend Stock Option purchases and what Stock Options were spent on). Neither stores anything in your browser or builds a profile of you; visitors are counted from a hash of the IP address and browser that changes daily. Analytics only run on synergytower.co.uk (never on localhost or in a self-hosted copy), and blocking them does not affect the game.
• The feedback form sends your message, the topic, your email if you enter one, and a short note on where you are in the game (floor, level, and your in-game player and company names) to the author by email (via Resend). It is protected by Google reCAPTCHA v3, which loads only when you open the form and is subject to Google's Privacy Policy and Terms.
• Reminders are off unless you switch them on (Menu, or when you first run out of coffee). They are ordinary browser notifications scheduled inside the open game tab: no push server, nothing leaves your device. At most 3 a day, never between 22:00 and 08:00, and only for waits of 5 minutes or more (coffee pot full, HR review retry ready).
• External links (Buy Me a Coffee) open in a new tab and are only followed when you click them.

License

Copyright © 2026 Martin Večeřa.

SynergyTower is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. It is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; see LICENSE for the full text.