Chain Letter

It is 1997. You wrote a chain email. It has not stopped.

You do not build a factory here — every infected inbox forwards the letter on its own, so the spread is a real epidemic curve: it crawls, it explodes, and then it runs out of people. A saturated world is worth nothing, so you buy a bigger one: address book → office listserv → web ring → forum signatures → the social feed → every group chat on Earth.

Sharpen the subject line, add a guilt trip, attach a cursed .gif, and eventually let it forward itself. When the spam filters finally win, you REWRITE THE LETTER — keeping permanent notoriety, so the next one is born more contagious.

How to play

• SEND IT to infect inboxes by hand (it scales with how fast the chain is already going)
• Buy upgrades with forwards — the currency your infected inboxes generate
• When the bar hits 100%, EXPAND REACH: same letter, whole new world, spread explodes again
• REWRITE THE LETTER to trade a run for permanent contagion

Features

• A logistic spread curve instead of the usual buy-a-generator ladder
• Six worlds, each ~25× bigger than the last
• Offline progress — it keeps forwarding for up to 8 hours with the tab shut
• Autosave, shareable score card, keyboard shortcuts
• Portrait, mobile-friendly, no install, no ads. Free — tips welcome.

Keyboard: SPACE send · 1-4 upgrades · E expand reach · R rewrite

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More free browser incrementals from ReskinLab: Rage Bait · Reactor Overload · You Are The Boss · Debt Spiral · Loan Shark

📊 New: The Funnel — an idle game where buying the bigger number is usually wrong.