Children begin to acquire language even before the first word is spoken. Although it is a complex process, children acquire language with incredible ease. One of the ways of language acquisition in children is language games. Play is a natural activity that children enjoy, so language games, as a combination of language and games, are a good way for language development. Along with parents and family, teachers also play a big role in language development. Telling stories, reading picture books, language games and everyday conversations are some of the ways children acquire language. The paper presents two studies. The aim of the first study was to examine how language games affect language acquisition in kindergarten and preschool children. The research was conducted in a kindergarten in a mixed kindergarten group of 25 children from three to seven years old. It was investigated whether children will learn better certain prepositions, colors, numbers, nouns and occupations if 12 language games are played with them over the course of a month. Research has shown that language games play a major role in children's language acquisition, as children from the group showed great progress. The aim of the second study was to examine whether teachers conduct language games and what their influence is on language acquisition in kindergarten and preschool children. The research showed that educators often conduct language games in their groups, they consider them important for encouraging language acquisition and that they see progress in language acquisition in children. In conclusion, language games have a great impact on children's language acquisition. For the linguistic and overall development of children, it is necessary to talk to them a lot, provide them with good role models, a stimulating environment and a lot of support, understanding and love.