You might encounter "free" listings on mobile app stores or third-party sites, but these are generally not the original game: Choo Choo Spider Monster Train - Apps on Google Play

: Standard price of $19.99, though it frequently goes on sale for significantly less, sometimes as low as $1.99 during major promotions.

The legitimate version of the game is available for purchase on major platforms:

: Available on PlayStation Store , Xbox , and Nintendo Switch for $19.99 . Free Alternatives and "Imitations"