Choose games or music
Open Import Lab and select the library type that matches the spreadsheet.
CSV import
Bring your game and album spreadsheets.
Map the columns you already have, preview the records, and build a richer game or music library.
One personal media library
A wider home after CSV
Movies
TV shows
Games
Music
Memories, Life Eras, rewatches, and taste in the same record.
The current mapped CSV workflow supports game and album libraries. Netflix and Prime Video use separate guided streaming flows.
Good source files include
A title or name column for every row
Optional platform, playtime, artist, rating, and date fields
Up to 500 rows in one import job
What the mapper gives you
Automatic guesses for familiar column names
A visible mapping step before data is submitted
Game and album metadata enrichment after import when available
The current workflow
Know what happens before you start.
Map your columns
Upload the CSV and connect each source column to a Mosaic field. Unneeded columns can stay unmapped.
Review the result
Confirm the created records, then continue organizing them inside your library.
The honest answer
CSV import is the practical route for an existing game or album spreadsheet. It is not a universal importer for every service export yet.
Questions before you move
Which media types can I import from CSV?
The current mapped CSV workflow supports games and music albums. Streaming watch history uses the Netflix and Prime Video flows.
Do my column names have to match exactly?
No. Mosaic guesses common names and lets you choose the mapping before import. A usable title or name column is still important.
Is CSV import included on every plan?
Bulk imports are a paid feature. You can review current plan details on the Mosaic pricing section before starting.
Build the library you will still want years from now.
Start with the media that matters, then let the history become more useful over time.