A downloadable game for Windows

What is it?

A crossover between a city builder and a card game, set in a Steampunk universe where smart urban development is key to survival.

What's cool about it?

Helios is a relaxing, yet increasingly challenging game that offers you:

  • Innovative genre-mix merging a city builder with a card game.
  • Accessible gameplay that is easy to learn, but hard to master.
  • Motivating endless mode with a tight feedback loop where time flies by.
  • Steampunk visuals that allows building a living breathing piece of art.
  • Powerful music that perfectly underlines every single moment.

When can I get it?

The game is out now for free. We simply love putting out our work to you and maybe hear back what you liked and what you didn't. So feel free to get in touch! 

Who's behind it?

We are STUDIO403. A Berlin-based student team that has previously released a well-received visual novel called A Scholar's Tale.


Helios.zip 503 MB

Development log

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Game won't run. Returns error: "DX12 is not supported on your system. Try running without the -dx12 or -d3d12 commend line argument."

Issue: I don't have any DX12 specific command-line arguments active, and no way to direct the game to not look for it.

The preview graphics look pretty. I'd really like to be able to try this game out but as it stands it cannot be run.

Deleted post
(1 edit)

Hi kaeroku,

We have adjusted some settings in the game and believe that this will fix your issue. The changes will be included in the next early access build next Monday.

We hope you'll soon be able to play Helios.

Have a great weekend!