Urho3D is a free lightweight, cross-platform 2D and 3D game engine implemented in C++ and released under the MIT license. Developed by Lasse Öörni
License: Open Source
Adventure Game Studio is primarily focused on 2D point-and-click adventure games, offering a user-friendly interface and strong community support. In contrast, Urho3D is a more complex engine that supports 3D game development and offers flexibility but requires programming knowledge.