If you've been wondering what's next for the Switch Online's 'Nintendo Classics' service, the November update is now available.

This latest update includes NES and Game Boy titles, with a total of four more games added to the service today. On the NES, there's Ninja Gaiden II: The Dark Sword of Chaos and Battletoads, and on the Game Boy, retro enthusiasts can look forward to Kid Icarus: Of Myths and Monsters and Bionic Commando.

Switch Online's Nintendo Classics service for Japan has received the same four titles in this week's update. Here's the rundown of each game (via Nintendo's Japanese website):

Ninja Gaiden II: The Dark Sword of Chaos

"This title is an action game for family computers that was released in 1990. A year after Ryu Hayabusa defeated the Evil Demon King and prevented the resurrection of the evil god in the previous work "Ninja Gaiden". The man who was controlling the Evil Demon King behind the scenes, the Fierce Demon Emperor Ashtar, starts moving on his own. In this game, you can climb up and down after being held on to a wall, or attack by consuming ninjutsu power while holding on to a wall, increasing your freedom of action. In addition, the "Alter Ego Technique" appears, in which up to two alter egos appear that follow Ryu and attack at the same time as Ryu. By successfully guiding the alter ego, Ryu's attack range will be greatly expanded."

Battletoads

"This title is an action game for family computers that was released in 1991. Rush and Jitz, the strongest and most trained frog warriors in the Battle Toad, will defeat a host of enemy monsters, navigate through traps, and rescue Princess Angelica and her fellow Pimples from their rescue. Fight through all 12 stages with a variety of variations, including side-scrolling, vertical scrolling battle action, and high-speed action on air bikes and space boards, using techniques tailored to each stage."

Kid Icarus: Of Myths and Monsters

"The title is an action game released in 1991 in North America for the Game Boy (unreleased in Japan). A new mission given to the angel pit by the goddess Palutena is to fight the bosses in the three worlds and obtain the "Three Sacred Weapons". As you defeat enemies that stand in your way and jump to jump, the pit will travel through a vast world. In "Hades" and "Sky", where the tower is set, it moves upwards, and in "Earthly World", it moves horizontally. Inside the stage, there are various rooms, such as a shop where you can buy items and a room where you can train and get weapons."

Bionic Commando

"This title is an action game for the Game Boy that was released in 1992. The main character, "Rud Spencer", who is equipped with a gun in one hand and a special wire in the other, challenges the Dreise army to a battle. There are several types of guns, such as the Wide Range Rifle that shoots bullets in three directions and the powerful Grenade Launcher. And the elastic wire is essential for capturing the fortress. It exerts great power when moving, such as shrinking the hooked wire to climb to a high place or jumping with momentum like a pendulum. In the communication rooms in each area, you can talk to allies and eavesdrop on enemy conversations to obtain valuable information."

To access these titles, you'll need to have an active base-tier Switch Online subscription. This update for the Nintendo Classics library follows the arrival of the original Luigi's Mansion for the GameCube app in October.

What do you think of the latest additions to the Switch Online 'Nintendo Classics' library? Let us know in the comments.