4 people are the primary owner of at least one file in dimitroffvodka/shadowdark-extras, and DimitroffVodka owns the most: 431 files, or 86% of the codebase. The truck factor is 1: that is how few people would have to leave before the majority of owned files lose their owner. 325 files have exactly one contributor, and 3 modules are dominated by a single person.