Tetris original

Lo mdlalo uqukethe igridi engunxande lapho izingcezu zomumo wejiyomethri abahlukene (okuthiwa "ama-tetrominoes") ziwa kusukela phezulu kwesikrini. Umdlali angakwazi ukuzungezisa futhi ahambise lezi zingcezu kwesokunxele noma kwesokudla ukuze azihlanganise zibe imigqa evundlile. Lapho umugqa ugcwele izingcezu ngokuphelele, uyanyamalala futhi amaphuzu anikezwe. Uma izingcezu ziyanqwabelana futhi zifinyelele phezulu kwesikrini, umdlalo uyaphela.