Independent Studio · Stuttgart, Germany
Games and AI software,
made in Stuttgart.
Crimson Dragon is a one-person indie studio. We're bringing the 1989 classic Oil Imperium back as Oil & Soil, and building the AI mindmapping tool rytica. Since 2011.
Available now
Our Products
GKV Alarm
Get notified when your German statutory health insurer raises its additional contribution. The overview of all insurers is free; push alerts come with a one-time Pro purchase, no subscription.
Bitcoin Island
The live Bitcoin price in your iPhone's Dynamic Island and on the Lock Screen, in euros or US dollars. Keeps updating while the app is closed. One-time Pro purchase, no subscription.
Unicorn Emojis Sticker Pack
Twelve hand-drawn unicorn emojis by Sandra Süsser for iMessage on iPhone and iPad, from heart-eyes and tears of joy to a pile of rainbow poo.
Piano For Kids
Our first app, and families still play it today. Kids learn simple songs by tapping the highlighted animals on colored piano keys and singing along.
Stay in touch
Join the Community
Discord
Talk to us and other players, report bugs and tell us what you want to see next.
Join our DiscordWhat we're building
Unhatched Dragon Eggs
Products that aren't released yet. Wishlist them or try the early versions.
Oil & Soil
Our remake of the 1989 tycoon game Oil Imperium. Build an oil company, trade on the world market and outplay your rivals.
rytica
Mindmapping with AI. Type a topic, get a first draft of the map, then change it however you like. Works offline and syncs between Windows, Mac, Linux, iOS, Android and the web.