Nintendo looks to be exploring ways to support SNES Mouse games on Nintendo Switch Online.
That’s according to evidence found in the service’s backend by reliable dataminerLuigiBlood.

In today’s SNES NSO update, LuigiBlood found evidence of a major rework to the SNES Mouse support, including support for both controller ports, the ability to replace inputs of SNES Mouse devices, and a different behaviour mode.
It’s speculated that the mention of SNES Mouse behaviour configuration could mean thatNintendois looking into ways to support the SNES Mouse in different, possibly more accessible ways than using a USB Mouse.

Only two games were released for SNES exclusively using its Mouse accessory – Mario Paint and Mario & Wario. A third, Sound Fantasy, was completed but never released. Many other titles use the Mouse via the second controller port for additional functionality.
Most of the games that were released with SNES Mouse compatibility were exclusive to Japan.

Some first-party Nintendo games released following the release of the SNES Mouse warned players that the mouse was not compatible, such as Super Mario All-Stars.



