Content controller system comprising rendering server system comprising a plurality of servers. The servers receiving a plurality of segment render requests that correspond respectively to segments included in a set of media content item segments. The servers render the segments corresponding to the segment render requests using a media content identification and a main user identification. Rendering the segments comprises retrieving metadata from a metadata database associated with the media content identification, rendering the segments using the metadata, generating a main user avatar based on the main user identification, and incorporating the main user avatar into the segments. The servers can upload the segments to a segment database and update segment states in a segment state database to indicate that the segments are available. Other embodiments are disclosed herein.