I've been around a while but had never heard of kakuro up until about 2 years ago. I like to think of kakuro as a crossword puzzle that uses numbers instead of words for both the clues and answers. There are some sudoku aspects to it also such as duplicates and zeros are not allowed.
It takes a little bit more time to pick up compared to other puzzle games but that extra time is well worth it. I became hooked and still am to this day.
Kakuro Game tracks your stats and shows how you compare to others who solved the same puzzle. Proud of your solve time? Kakuro Game has a feature that allows you to challenge others to beat your time. You can even sign in to sync your data (stats, challenges and in-progress puzzles) between devices. Start a puzzle on Itch.io and finish it on your phone.
Play Kakuro Game On:
Itch: https://kakurogame.itch.io/kakuro-game
Our Website: https://www.kakurogame.com/
iOS: https://itunes.apple.com/us/app/kakuro-game/id1436552307
Android: https://play.google.com/store/apps/details?id=com.kakurogame.kakuro_final