50/50 sounds like Acky Tracky, unlimited players, usually around 10 tho,
even teams and you would have a tracking team and a hiding team, a base to get to.
if your hiding, you would have to get to base and shout acky tracky 123 to make yourself safe, if the catcher got you, he would have to hold onto you and shout acky tracky 123 then you would be out.
also a variation of this is called Beat the letter, same as acky tracky but the hiding team are given a word and each player a letter of said word, if they catch you, they beat you til you give up the letter. then they have to work out the word. Fun, exercise and educational
