"Fans with a paid Nintendo Switch Online membership can purchase a pair of Nintendo Switch Game Vouchers for just $99.99 through July 31, 2019.
You can redeem the vouchers for digital versions of select games on Nintendo.com or Nintendo eShop on your system. Vouchers are valid for a year after you purchase, so you could use one voucher now and save another for an upcoming title—or redeem them both right away."
The games available right now for purchase with the vouchers are:
- 1-2 Switch
- Bayonetta 2
- Dragon Quest Builders
- Fire Emblem Warriors
- Fitness Boxing
- Go Vacation
- Mario Kart 8 Deluxe
- Octopath Traveller
- Pokémon Let's Go Pikachu / Eevee
- Splatoon 2
- Super Mario Odyssey
- The Legend of Zelda: Breath of the Wild
- The World Ends With You: Final Remix
- Xenoblade Chronicles 2
- Can you use them for future titles?
Yes, you can use them on upcoming games! Fire Emblem: Three Houses, Marvel Ultimate Alliance 3 and Astral Chain are available right now to purchase with the game vouchers.
- How long do the vouchers last for?
A full year after purchase.
- Can I buy multiple vouchers?
Yes, you can have up to 8 vouchers / 4 pairs at the same time.
- Until what date can I buy the vouchers?
It's not confirmed. The American site says until July 31 but the European and Japanese sites don't mention any date.