I was thinking about this (as well as the optional “Go” in the name.
Ohio, mid 50’s, we called:
“All-ee. All-ee Out Come Free” (I’m guessing "All (still) Out (unfound) Come (In) Free (no penalty).
What did you yell!
I would yell “Guys! Mom has dessert!”
A dirty trick, but it worked.
Ollie, Ollie, oxen free. Northeast Ohio, 1980s.
olly olly oxen free.
You asked.
Olly olly oxen free. Rural Idaho, mid-60s.
All-ee. All-ee In Come Free
or
All-ee. All-ee Oxen Free
MA/RI in the early 60s. All-ee All-ee In Come Free. Although I had no idea it was “all”, and probably pronounced it as: Olly Olly In Come Free. The first two words were, AFAIWC, nonsense words.
The same, but we said free three times, if I remember correctly.
Chicago suburbs - early 60s.
olly olly oxen free. Texas late 60’s
Pooloo
Sea
Bagoomba!
Allee, allee, all come free. Seattle, Washington. 60’s-70’s.
Detroit, late 80s-90s:
Olly-olly oxen free(d)
I distinctly remember wondering what the hell the phrase meant, and always getting a mental image of Pa from the Little House books farming with the oxen and yelling HAW and GEE.
“Eff you guys, I’m going home.”
Me too. Chicago, early-to-mid 80s.
I only know “Olly olly oxen free” and its variations from TV and books. Cecil did a column about it a while back: What’s the meaning of "Ollie, Ollie oxen go free"? - The Straight Dope
When I was a kid we said “Come out, come out, wherever you are.” I grew up in Western New York in the 1970s.
Same here. Bronx, 1950s. I’ve only heard of “Olly olly oxen free” in TV and books.
Also Chicago suburbs, early 60’s, but we said “free” just once in my neighborhood.
Ditto, California, 1960s.
I assume the phrase slurred from “…outs in free” but concede that’s a folk etymology.
Klaatu… barada… necktie!
Me too, including the northeastern Ohio part but about a decade earlier.
I have always wondered what free oxen had to do with the game.