I'm pretty sure FIFE could handle something like that but I'm not sure how easy it would be. I'm not aware of anyone who has tried something like this before. The biggest challenge might be content creation (the tiles themselves), map creation, and pathfinding. I'm not sure how gameplay works and how the characters move from tile to tile. Only thing I could suggest is to try to throw a proof of concept together and see what the roadblocks might be.