(chiefly fiction, especially video games) to get upgraded; to get enhanced

a pop-up

to give up, resign, surrender

resignation, surrender / (sports, games) loss by resignation or withdrawal

the practice of brushing up a skill

to brush up (a skill, knowledge, etc.) / to review or improve (something)

(video game development) to complete development

(video game development) completion of development

raise the wage base

pay raise due to an increase in the salary scale, an increase in the basic wage