Unity
Cross-platform game engineFreemium
A widely used commercial engine for 2D and 3D games, scripted in C#, with a large asset store and export to desktop, mobile, consoles, and the web.
Official siteReach for it when
- Mobile and cross-platform games
- Teams that want a huge ecosystem of assets and tutorials
Worth knowing
Personal is free up to $200K in annual revenue or funding; above that you need a paid seat. Web builds work but are heavier than browser-first engines. The 2023 per-install Runtime Fee was cancelled in 2024.