Here is an overview of each game, via Nintendo:

• Shining Force II – Joins the original Shining Force in the SEGA Genesis – Nintendo Switch Online library! In this tactical RPG fantasy adventure, you’re tasked with leading the titular Shining Force in cinematic battles against an ancient evil that threatens to overtake the land.
• Sonic the Hedgehog Spinball – Dr. Robotnik’s fortress is a giant pinball machine! Help Sonic spin, bounce and bump through four different pinball zones made up of glittering caverns, slimy sewers, boiling lava. and monstrous machinery to collect the Chaos Emeralds and save the inhabitants of Mobius from a mountain of trouble.
• Space Harrier II – Become the heroic Space Harrier and battle a bevy of wicked creatures in this frantic and challenging action game, which was one of the original launch titles for the SEGA Genesis!

Sega Genesis – Nintendo Switch Online is available as part of the Nintendo Switch Online + Expansion Pack membership.

Watch a trailer for the new additions below.

English

Japanese