Hello Adam. Yes, only Turn Based PvE at the moment.
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The plugin can work with your backend if you make some adjustments. The database used is RocksDB, which is embedded for simplicity and performance, so merging the databases won’t be possible. However, you can integrate the login system or data from both databases as if they were microservices. It’s possible to create accounts and log in via HTTP requests, so you can completely replace the login screen with one that fits your needs.