- A free game for kids 1-5 years old! Welcome to App For Children - a fun game for kids 1, 2, 3 and 4 years old! App For Children contains a total of 8 games and 8 jigsaw puzzles - all in one app and optimized for both boys and girls. App For Children is a free kids game. The puzzles and games contain over 100 fun animations of cars, fire trucks, buses, police cars, trains and much more. When a puzzle is completed it turns into a fun and entertaining game for kids. The interface of the app ha