Still the developer has to make sure that your data - or game progress 🤪 - is available when you switch device or platform.Steve Jobs was ahead of his time, as usual. Today, the technology is finally there. With technologies like Stadia and GeForceNow, even demanding 3D video games have become web apps. Soon, Photoshops and Final Cut Pros will follow. Mark my words, in 5-6 years a computer will be nothing more than a web browser.
The Slay the Spire developers don’t cover themself exactly with glory when it comes to cross device/platform progress functionality.