- Sources: Next Call Of Duty Won’t Have A Solo Campaign, May Have Battle RoyaleKotaku
- Call Of Duty: Black Ops 4 May Not Have A Single Player CampaignCinema Blend
- ‘Call of Duty: Black Ops 4’ reportedly drops single-player campaignDigital Trends
- Call of Duty: Black Ops 4 won’t have traditional single-player campaignPolygon