This document summarizes an eTwinning project between schools in Poland, Hungary, and the Czech Republic that focused on traditional ball games. The goals of the project were to connect students, help them learn each other's languages, improve physical fitness, and practice English. Students aged 12-15 collaborated over a school year, meeting in person in Poland. They created dictionaries of ball game rules in four languages and published project outcomes online. The benefits included building international friendships, practicing communication skills, learning new sports, improving technology skills, and fostering cooperation.