This comes via reliable dataminer LuigiBlood (delightful name) and reported by VGC. Apparently, the Nintendo Switch Online SNES emulator had always contained the relevant support necessary to implement the SNES Mouse, but the most recent update to NSO significantly updated the data.

Four more SNES games have been added to the Nintendo Switch Online SNES library, including one that's never been released outside Japan.

Nintendo has announced four Super NES games from the early ‘90s are now live via the Nintendo Switch Online library.

A trailer featuring these new Nintendo Switch Online games can be found below. When Nintendo brings over Super Famicom games, it offers the games in their original state, without any translations. For those unable to read Japanese,

According to the user, Switch Online’s SNES emulator – which is used for its library of SNES games for Switch Online subscribers – has secretly contained SNES mouse support since launch. However, what’s notable is that there’s now apparent evidence that it was recently significantly updated in the emulator code.

Here are the Nintendo Switch Online SNES games arriving on the Switch Online library this month. Classic games, including Battletoads Double Dragon, Big Run, Cosmo Gang The Puzzle, and Kunio-kun no Dodgeball da yo Zen'in Shūgō! are now available for Nintendo Switch Online members.

For obvious reasons, Mario Paint has never been made available on another platform, but it seems that could change. A new batch of games was recently added to Nintendo Switch Online 's SNES app. A datamine of that update from Tumblr user LuigiBlood has turned up evidence that suggests some of the games that use the SNES Mouse could be coming to Switch.

Nintendo Switch users are in for a treat as fans get four additional Super Nintendo titles to the Switch Online subscription service.