The phrase "health orbs" refers to special items or power-ups in video games that restore or boost a character's health. It's like a magical ball or object that helps a player stay healthy or regain strength during the game. Full definition
Dragon Quest X Wii U bundle: Premium Wii U, Dragon Quest X, black Pro Controller, a Nintendo prepaid card worth 1,000 yen, and five super health orbs (nintendoenthusiast.com)
Monsters will, instead, drop health orbs which you can pick up as you fight. (thezombiechimp.com)
Others can give stat buffs or make health orbs appear more frequently. (thatvideogameblog.com)