Always wanted to make an isometric game. Making the assets isn't difficult, but my coding skills are only rudimentary. I'm looking for a relatively artist-friendly engine that's free, but those don't exist (or at least I couldn't find them). Might consider making a mod for a commercial game engine instead, but I'm aiming for a pretty particular graphical style, and modding a commercial game would limit the amount of people who would be able to play it. Could also use Game Maker, have some experience with that, but building 2.5D games in that is completely new for me. Any tips?