This site has made my day. I played skully avidly in the early 1950’s in the Amsterdam Housing project near Lincoln Center (which didn’t exist at the time). I played with a passion through second grade and then my family moved to New Jersey where new adventures took over. As I recall my dad filled the bottle caps with melted crayon for me in fear that I’d burn the apartments down. I live in New Mexico now and taught it to my daughter. I still have the caps I modified here in the early 80’s. If only I could find some decent competition! Also in the 1980’s I introduced the game to my nieces and nephews in Managua, Nicaragua. I told them it was called it Matador (killer). I can still remember the joy in my young niece’s voice when she made killer, yelling out “MATADOR!”