Running in circles

That was pretty much my afternoon, almost literally. First & foremost, if you have any ideas of games/activities for groups of 10-20 kids, age range between 6-13yrs, which require almost no language to explain and basically no material--please message me!!!! Today was the first day that kids came to the after-school center, and frankly, besides meal time, it was a hot mess. Most of the kids I spent my time with were boys, with an insane amount of energy & a seeming intent to kill each other (lots of wrestling & karate kicks). They barely listened (to my English or spattering of Romanian). There were some good moments. But overall it was quite exhausting. Some of the kids were really cute & I did enjoy spending time with them, also later on there was a group of 12yr olds (with a 9yr old & 13 yr old thrown in) that (mostly) calmly talked to me. And by calmly I mean I only had to try every 7 seconds to stop them all from talking loudly at once, instead of 3 seconds. haha. Mostly names & ages, but it was better than trying to wrangle them out of putting each other in headlocks. There seems to be one 12yr old girl that speaks a bit of English and she was eager to talk and translate (for some reason, half the 12yr old boys don't seem to remember their English from school, but French--but in reality they could only say "Comment tu t'appelles?" and got really confused when I said anything more than "Je m'appelle...").  I was a bit frustrated with the woman in charge because I was simply thrown in with the kids with no introduction, no instructions, no ideas of where anything was (as far as games, etc--though really there are very few toys & only a small bingo & domino game, that I could tell. I'm quite confused as to why I was only asked to gather electronics for donation, and nothing like balls, games, art supplies). It's unorganized, which is highly frustrating. And eventually when there were other adults around, they barely spoke to me, certainly not to offer any ideas of what to do with the kids. Things were fine at the beginning, I had a group of about 6-8 boys on the floor, we started to play a game. Then more arrived & they all got really loud, so I herded the ones that didn't have homework outside so they wouldn't disturb the kids with homework. Somehow the non-homework group was all boys, I'm guessing between 6-10yrs, about 10 of them. More kids eventually got added. I was trying to get them to play a game, which almost worked, but every 10 seconds they were all over the place. I tried to explain freeze tag, which for some reason they didn't seem to get. Then one was crying, another one had someone in a choke hold, a bunch of boys escaped out the fence, and so forth. Eventually the only game that seemed to work was tag, with me as It (they don't seem to get the "I tag someone, now they're It" concept for some reason). They loved that, and more kids kept coming out & getting incorporated into the game. So essentially I spent most of the afternoon chasing kids around the yard. It's unseasonably hot. So I guess that was my workout for the day! I tried to do some more educationally geared games, but it's difficult with 15-20 kids of varying ages in an outdoor area (very unlike being in a classroom!). Simon Says worked for about 5 minutes, but the minute that I tried to get other kids to be Simon, it unraveled. Needless to say, I'll be racking my brain for ideas for tomorrow! Any suggestions would be very welcome! I think I might have to give up the idea of trying to work with everyone at once and instead be content to interact with smaller groups at a time (though how I'll do that & also keep peace in the wrestling group, I have yet to figure out).