You can purchase the game through various official channels:

Amazon.com: Ultimate Chicken Horse - A-Neigh-Versary Edition

is not a free-to-play title on the Nintendo Switch; it is a premium game typically priced at $14.99 on the Nintendo eShop . While unofficial "free NSP" downloads exist on third-party sites, these often carry risks of malware or console bans from Nintendo. Core Gameplay Features