if i'm not mistaken, all european releases of fallout 1 had invisible children but fallout 2 had them like normal, except for the german version. invisible children would still steal your items in the den
and you could still accidentaly kill them in fallout 1, for example, if you throw a grenade at someone and a child happens to be nearby. very unlikely but possible
german version also censored chem-reliant and chem-resistant traits and didn't have gore. in fallout 1, you can't get stealth-boy because the corpse doesn't appear and you can't finish the quest in broken hills because the corpse you have to get the letter from is missing