No it did not. The data wasn't relational. The ORM was the smallest part of it, I could have written/read from JSON too, but SQLite was just a far better choic

No it did not. The data wasn't relational. The ORM was the smallest part of it, I could have written/read from JSON too, but SQLite was just a far better choice for a mix of structured data and big blobs. The thing it replaced was writing to a file at a predetermined offsets. Which became very fun as the file format changed between versions and backwards compatibility needed to be maintained.