Why this once-legendary health icon is forbidden in video games

In the early days of video games, it was easy to spot an item that could heal your character again. Whether in Doom, Duke Nukem 3D, or Battlefield 1942, if you picked up a package with a red cross on it, your health improved after a few seconds. Nowadays, however, you can hardly find the clearly marked medipack with the red cross in any game. It turns out there's a reason why. The symbol with the red cross should never have appeared in video games to begin with. Although the symbol seems quite simple, it isn't subject to public domain.