Alimer is a modern cross-platform .NET 10 game engine featuring a modular architecture with Entity-Component-System (ECS) design, multi-backend graphics rendering (Vulkan, Direct3D 12, Metal), physics integration, audio subsystem, and asset pipeline. The engine provides a complete framework for game development with systems for rendering, physics, audio, input, and scene management. It follows a layered architecture where platform-specific implementations are abstracted behind clean interfaces, allowing developers to build games that run on Windows, Linux, and macOS. The codebase demonstrates strong engineering practices with well-defined boundaries between systems, extensible asset importing, and backend-agnostic graphics abstractions.