: Supports up to four players simultaneously. It was the first title in the series to introduce region-locked online play .

The string you are referencing typically identifies the of Mario Tennis Open for the Nintendo 3DS, which features multi-language support (English, French, German, Spanish, and Italian). Overview of Mario Tennis Open (Europe)

: One of its most notable features is the ability to play multiplayer locally with only one Game Card via Nintendo's "Download Play" system.

: Players can choose between traditional buttons, Touch Screen controls, or gyroscopic motion controls.

Multilingual Game - Mario Tennis Open - Nintendo 3ds - Eur Pal Sports