While the full PC game is a paid product, you can access it legally through these official channels:
Greenheart Games offers a free evaluation demo on their official website and Steam that lets you play through the early stages of the game. Game Dev Tycoon PC Game Free Download
If you have an active Netflix subscription, you can download the full mobile version of Game Dev Tycoon for free on iOS and Android devices. While the full PC game is a paid
A free, limited-content version is available on the Microsoft Store for Windows. Game Overview Game Dev Tycoon PC Game Free Download