IllTemperedTuna – The short answer: Yes.
The long answer: The Flax engine is at version 1.8.2. You can program in C++, C#, and it has fully functional visual scripting. The Flax editor is similar to Unity’s editor but is not as nice to look at. It does work on Windows and macOS arm64. It is reported to work on Linux (Ubuntu) but there is a laundry list to go through to set it up and some people have reported having issues with it on Linux versions that aren’t Ubuntu. In my opinion it appears to manage memory much better than the Unity engine. I’ve done tests and on my test game builds the Flax engine always has higher FPS(about 20 higher) and takes up less RAM than the builds of the same test game for Unity. The system I use is a 6 core i5 at 2.5Ghz, 32 GB Ram, gtx 1650 4GB vram.
The Flax engine does not have an asset store. However, you can easily port assets from Unreal, Unity, and Blender into a Flax project.
The following from Flax engine website
Seamless C# and C++ scripting
Automatic draw calls batching and instancing
Every asset is using async content streaming by default
Cross-platform support (Windows, Linux, Android, macOS, iOS, PS4, PS5. Switch, Xbox)
Realtime Global Illumination (DDGI and reflections with custom software raytracing)
GPU Lightmaps Baking
Visual Scripting
VFX tools
Nested prefabs
Large Worlds (64-bit precision for worlds coordinates)
Localization tools
Online services (Steam, Xbox Live, PSN)
Networking for multiplayer games
Animation tools and features
Behavior Trees
Cloth simulation
Open World Tools (terrain, foliage, fog, levels streaming)
Hot-reloading C#/C++ in Editor
Gameplay Globals for technical artists
Full source-code available
Direct communication and help from engine devs
Lightweight development (full repo clone + compilation in less than 3 min)