Because the game is streamed, a permanent, high-speed internet connection is required. Any instability will result in lag or disconnection, which is particularly punishing in a fast-paced "Soulslike" game.
The most reliable way to experience on Switch is through the Nintendo eShop . Thymesia Cloud Version Switch NSP Free Download
To play beyond a brief trial period, the launcher requires an "Access Pass" tied to a legitimate Nintendo Account purchase. Because the game is streamed, a permanent, high-speed
If the trial runs smoothly, you can purchase the full Access Pass to unlock unlimited gameplay. Game Features To play beyond a brief trial period, the
Using modified NSPs on a modded console to connect to these cloud servers carries a high risk of getting your console banned from Nintendo services. Official and Safe Way to Play
For players who can maintain a strong connection, offers: How well does Thymesia play on switch? - GameFAQs
Unlike standard Switch games that run directly off your console's hardware, uses streaming technology. This means the "game" you download is actually just a small launcher program—roughly 80 MB in size—that connects your console to a remote server where the actual game processing happens. Why an NSP Download Won't Work for Thymesia