Hey there - this will be patched in the newest version...to fix, make absolute sure that your first screen, all monsters are disabled. That *should* fix the problem, but it also may not. It's something I forgot to comment out that is causing this, where it assumes the first object will be zero indexed. That, and many more little bug fixes have already been patched thanks to everyone's help. I need Josh to make a few corresponding tweaks to the front end, and then we'll release the first patch for beta testers. And it will include simple shooting, some collectables, maybe a counter (get all collectables, open the door sort of thing) and hopefully a few more AI types.