About thoozie

thoozie is a card game built the way a park guide gets written: go and measure the thing, cite where the number came from, print it straight.

The idea

Every card in the set is a real roller coaster — a real park, a real height, a real year it opened. Collect them, fill an album, and settle an argument on five honest battle stats: Height, Speed, Inversions, Throughput and Vintage, the reversed stat where an old wooden coaster from the 1920s can out-duel something built last summer. Duel your friends live or over 24 hours, swap your spares, and fill the album page by page. No card is fictional. No stat is invented. Where a number is an estimate rather than a fact, the card says so and /methodology shows the working.

Who's behind it

thoozie is made and operated by Aethus Ltd, a small UK-based outfit. It's free to join — no invite needed — and still in beta: we tune the game against real players rather than our own guesses, and 185 Founders who signed up before 30 September 2026 helped shape it.

We're not the only ones making it. Theme park composer Nick Hutson wrote the music, and players shoot the photos on the cards. Meet them, and find out how to join them, on Made by thoozies. Some of the art is AI-made for now while that happens — our AI statement says exactly which bits.

Why free, and why we mean it

A card game about counting credits should never make you feel cheated by its own economy. Every card is reachable without paying, every way to play is free, and the published odds on /odds are the real numbers, generated straight from the code that draws the cards rather than retyped by hand where they could quietly drift. Read the whole list of things we won't do at The Collector's Promise.

Where it's going

Today that's 334 cards across two full sets and a mini-set, with smaller sets arriving between the big ones. The changelog tracks what's actually shipped, not what's planned — nothing appears there until it's live. It's a digital game today; Beyond the screen is where we think out loud about the real park.

Get in touch

Found a wrong stat, a bug, or just want to say hello? Contact us — a real person reads every message.