Ключевые слова: activity, adult, background, big, brainteaser, challenge, circle, circular, complexity, concept, constructive, conundrum, creative, deadlock, destination, development, difficulty, direction, doubt, education, element, entertainment, entrance, entry, exercise, exit, find, finish, game, gaming, goal, green, hard, identity, illustration, image, isolated, kids, labyrinth, leisure, line, maze, play, puzzle, quest, round, search, way, white,