Nintendo Switch Online will add digital collections of Nintendo 64 and Sega Genesis games via a premium expansion pack coming this October. Announced during today’s Nintendo Direct, the Nintendo Switch Online Expansion Pack will seemingly function like the digital libraries of other online services. The main difference here is that these games will be behind an additional paywall, meaning existing Nintendo Switch Online subscribers will have to upgrade their plan to access these retro games. Nintendo says it will confirm the price point and exact release date of the Expansion Pack in the weeks ahead. For now, have a gander at the games you’ll get when the service arrives in October. Nintendo Switch Online Expansion Pack – Nintendo 64 games at launch Super Mario 64 Mario Kart 64 Starfox 64 Yoshi’s Story The Legend of Zelda: Ocarina of Time WinBack Mario Tennis Dr Mario 64 Sin and Punishment Nintendo Switch Online Expansion Pack – Sega Genesis games at launch Castlevania Bloodlines Contra Hard Corps Dr. Robotnik’s Mean Bean Machine Ecco the Dolphin Golden Axe Gunstar Heroes Musha Phantasy Star 4 Ristar Shining Force Shinobi 3 Sonic the Hedgehog 2 Streets of Rage 2 Strider Nintendo plans to add more Nintendo…