The best game engines in 2025 include Unreal Engine 5 for high-end, realistic graphics and AAA games; Unity for mobile, indie, and cross-platform development; and Godot for lightweight, open-source 2D/3D projects. CryEngine offers top-tier visuals for immersive environments, while GameMaker Studio 2 is ideal for fast 2D game creation with a simple interface. For open-source multiplayer games, Amazon's O3DE (formerly Lumberyard) is also a strong choice. Each engine suits different needs depending on your game's scale and platform.