We (I race with RoWo) had 2 races and it worked. Dont forget to hit "R" in any new Session to activate replay mode! In any new Session the replay is on *live*, but you must hit once R to get it to a delay Display! The exe has no Interface for custom overlay, sry. I will definitly never offer a toolkit of modelling something. Maybe you can edit sooner or later a wpf XAML the Default style of my Little tower, Maybe I make a pure dll interface so you can do what you want in case you can write Code (starting from Opening a window like Tower). Let´s see what new GUI gives us. I´m still convinced that rf2 should offer you an Option to model the overlays, not me.