When searching for the NSP, try to find the "Base + Update + DLC" bundle. Here is what the updates add:

Without the update, you may experience crashes during the final boss animation (a known memory leak).

The title is literal. Beasts are the burden. In previous Voice of Cards games, you were stuck with a fixed party. Here, you wander the world fighting monsters and then use a dice-based persuasion system to recruit them. Want a Slime healer? A Dragon tank? You can collect over 50 unique beasts, each with its own skill tree.

Searching for Voice of Cards- The Beasts of Burden Switch NSP will lead you to sites like nxbrew, ziperto, or softcobra. Be aware:

The Verdict: If you can afford it, buy the game on the eShop for $29.99. If you own the cart and want a backup, learn to dump your own NSP using NXDumpTool.