A boosting order where the buyer plays on their own account alongside the booster; no credentials change hands.
Self-play is the safer form of boosting: the buyer keeps the account, the games are theirs, and nothing has to be shared. The booster joins the buyer's party or duo queue and carries the games. It costs more per rank than piloted boosting because the booster cannot play solo, and it is the only form that never risks a sharing ban.