In a news post today, UbiSoft+ announced its arrival on Amazon Luna. Players can subscribe for $14.99 a month for access to over 100 Ubi games, all streamed through Amazon's very solid new platform.
Currently, subscribers need to apply to access to Luna by registering here. But before the end of the year, UbiSoft+ will also be available on Google Stadia, with cross-saves available across both platforms. UbiSoft+ games will be available to play without a Stadia Pro account.
If you have Luna, this is a great, inexpensive way to check out Assassin's Creed Valhalla, as well as a ton of other UbiSoft titles. A full list of the games available can be found here. (Update: This link appears to lead to the European UbiSoft site. We will update with a US link when one becomes available.)
I am definitely going to be checking this service out. Keep an eye on Gaming Nexus for more details as they develop.