You can see the archived version of the Flying Sheep website...

You can see the archived version of the Flying Sheep website here which shows many of the projects they've worked on:
https://web.archive.org/web/20211025231420/https://flying-sheep.com/games/

(Note: this is an archived site so you can't actually click the links on this page)

Here are some of the brands / IPs mentioned:

• Alvin and the Chipmunks (20th Century Fox)
• Barbie
• Ghostbusters
• Hotel Transylvania (Sony)
• How to Train Your Dragon (Dreamworks)
• Nerf
• Nesquik (Nestle)
• Ninjago (Lego)
• Puss in Boots (Dreamworks)
• Spirit (Dreamworks)
• Trolls (Dreamworks)
• Trollhunters (Dreamworks, Netflix series)

They seem to have worked with Toggo quite a bit.
Toggo is a children's TV programming block on Super RTL (a German free-to-air TV channel).
You can find some of Flying Sheep's games on their site:
https://www.toggo.de

If you use Chrome, you can use the built in browser translation to change the text to English.

Here is one of Flying Sheep's Lego games for example:
https://www.toggo.de/spiel/turnier-der-tapferen

This game appears to be an online game that is very active (everytime I played there were other players playing).