Nintendo Age member NovaSquirrel has released a new homebrew title for the NES called Nova the Squirrel. The game is available for free. The game is mostly a mix between Kirby and Super Mario Bros 3, with influences from many other games, and there's a lot of puzzles. It's very long, with 33 levels and 7 bosses, and it took NovaSquirrel three years to develop.
The game may see a cart release in the future. For now, the game can be downloaded here (a donation is requested but is not mandatory): https://novasquirrel.itch.io/nova-the-squirrel