This wording is implying that players that do not pre-order the game will have the ability to obtain these fighters by unlocking them in - game. (gamingtrend.com)
When the user says this command, the smartphone will respond by unlocking itself for use. (ibtimes.com)
At the beginning of the game, players will only have few heroes at their disposal, with additional classes becoming available by unlocking them with the right currency. (wccftech.com)