Games/Services in WISP are called "eggs", and they're categorised in "nests". Adding games to WISP works the same way as adding games in Pterodactyl, with backward compatibility. This means you can import Pterodactyl eggs into your WISP panel.
There is a large repository of eggs for various games and services here: https://github.com/parkervcp/eggs (Find out how to import them here: Importing eggs )
View all available guides, chat with the WISP community on Discord, or email support, should you require assistance.