Some areas don't depend much or at all on language such as games and puzzles e.g. Rubik's Cube from Hungary. However creating a viral game is hard. Some niches

Some areas don't depend much or at all on language such as games and puzzles e.g. Rubik's Cube from Hungary. However creating a viral game is hard. Some niches are easier and less demanding such as daily puzzles for seniors or bedtime story sites for parents with young children just use Google translate or it's API.