For all - ages indie visual novels, 'Lumino City' is quite good. It has a beautifully crafted world and an interesting puzzle - solving aspect to the story. 'Machinarium' is also a great choice. It's a visual novel with a steampunk aesthetic and a story about a little robot on an adventure. 'The Little Acre' is a family - friendly indie visual novel that combines Irish folklore with an engaging story.
I would recommend 'Night in the Woods'. It has a relatable story about a young adult coming back to her hometown and dealing with various issues in a non - offensive way. 'Oxenfree' is another all - ages indie visual novel. It has a spooky - ish story but nothing too intense. And 'Gone Home' is a great one too. It's more of a story - exploration visual novel that has a positive message about family and acceptance.
A great all - ages indie visual novel is 'To the Moon'. It has a very emotional and family - friendly story about love, memories, and sacrifice. 'A Bird Story' is also wonderful. It's a short and sweet visual novel that tells a story of friendship in a really touching way. Another one is 'Botanicula', which has a unique art style and a simple yet charming story.