Godot Engine: best for one project in both 2D and 3D
Godot Engine is a cross-platform engine that handles 2D and 3D games from one interface. The current version is 4.7.2, updated August 18, 2026, at 82 MB under the MIT licence.
The developer says it ships with a broad set of common tools, so you spend less time rebuilding basics. Export is a single step to desktop targets (Linux, macOS, Windows), mobile (Android, iOS), the web and consoles. That makes it a sensible pick if you want to keep one codebase and aim at several platforms.
Pros
- Handles both 2D and 3D from one interface
- One-click export to desktop, mobile, web and consoles
- Free under the MIT licence at 82 MB
Cons
- Learning curve may be a factor for newcomers
- Last update listed is August 18, 2026, older than several others here