Curious Inventions LLC

Software built with curiosity.

We make games, learning tools, and all sorts of software we wish existed. Each one starts with a simple question: "What if...?"

Explore our products Play Echoes of the Queen

Our Products

A growing collection of games and apps.

Echoes of the Queen key art: spaceships defending a planet
Available now

Echoes of the Queen

Save the Queen. Command the Stars.

A sci-fi idle tower defense game set among the stars. The Queen has been kidnapped! Search the galaxy for her as relentless waves of enemies close in from every direction. Upgrade your defenses, research new technology, and mine the minerals you need to expand across the galaxy.

  • Idle progression that keeps earning while you're away
  • Thousands of waves of strategic defense
  • Specialized weapons and upgrades to fit your playstyle

Android on Google Play · iOS coming October 2026

Visit EchoesOfTheQueen.com Get it on Google Play
Early access

Algebra Trainer

A full Algebra I course and homework helper.

Algebra Trainer walks students through Algebra I step by step, showing exactly how each move transforms an equation. It works as a complete course or as a homework helper when you're stuck on a problem.

  • Complete Algebra I curriculum
  • Step-by-step, visual equation solving
  • Runs right in your browser, no install needed
Try AlgebraTrainer.com
Coming soon

Toy Trillionaire

Build a toy empire, one factory at a time.

A toy factory strategy simulation game. Design production lines, invent new toys, manage your workshop floor, and grow a humble toy shop into a global manufacturing empire worth trillions.

  • Build and optimize toy production lines
  • Invent and unlock new kinds of toys
  • Grow from a small workshop to a worldwide empire
Follow development on Discord

About Curious Inventions

Curious Inventions LLC is an independent software studio located in Clearwater, Florida, USA. We build a wide range of software, from strategy games that keep you coming back for one more wave to learning tools that make tough subjects click.

We care about craftsmanship, fair play, and listening to the people who use what we make. Many of our best ideas come straight from player and user feedback.

  • Curiosity first

    Every project starts with a question worth exploring.

  • Built with care

    Polished, thoughtful software that respects your time.

  • Community driven

    Your feedback shapes what we build next.

Get in touch

Have feedback, found a bug, or just want to say hello? Email us or join our community on Discord.

support@curiousinventions.com Join our Discord