1 person is the primary owner of at least one file in kursku/Rimworld, and Rikiki owns the most: 135 files, or 100% 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. 135 files have exactly one contributor, and 14 modules are dominated by a single person.
Engineering-leader view of who owns what: silos, hotspots, dead code, and bus-factor risk by person.