I've run your simulator on a touch screen laptop without issue. It kinda made it feel "normal" using my fingers instead of a mouse.Yeah, I've wanted to look into touch screen GUIs for most of my simulations, but don't have the means right now. I wrote it in JAVA so that it was "portable", but (most/all) tablets and smartphones won't run JAVA. I've not had the incentive to add a touch screen monitor to my PC as I sit pretty far back from the 37" TV I use right now. I need to read up on how the JAVA GUI handles touch screen and what needs to be done to support that. It may be fairly transparent, at least in some minimal set of features.