I am leaning towards using the Irrlicht Engine for a 2D game. The game will consist mostly of GUI elements, its really a simulation/RTS (SimCity'ish). I looked at SDL, Torque and a few other SDK/tools but the Irrlicht Engine is very impressive. I know it is total overkill for what I need but I think it will be great to add 3D elements to the game in the future. Has anyone used this engine for 2D GUI-based game/sim? Is there a GUI SDK or GUI extension for Irrlicht that someone has written? I would be nice to just have to skin rather than develop the GUI. Am I crazy for choosing this engine for my game? Thanks.