When playing groundies……watch out for this!

So about 2 years ago we decided to go to the park and play groundies. Now im 30 years old and have 3 younger sister and a younger brother. I have never even heard the game groundies let alone played it… They explain the rules are simple. All you have to do is 1 person counts while everyone else hides. If the person counting finishes and says groundies, whoever is on the ground is it automatically. At this point im like this might actually be fun. So at the time i was about 6 months pregnant and was in fear i wouldnt be able to run so fast. My little sister gets to counting and the rest of us run and hide. She turns around after finishing her count and we are all trying to figure out how to get to the base without touching the ground for she can call groundies at any time. Lol. So she goes toward the direction we are in and then starts looking in all the equipment. When she gets about 10 ft away from us ….we haul tail laughing and trying to get to another piece of equipment before she yells groundies. We play as it starts to get dark. Now we have been playing for awhile and the sun is almost all the way down. We decide its time to head home because its late but not before playing one last round of groundies….its addicting… Anyway my brother ended up being it this last round and when he got done with his count we again haul tail trying to make it to base, only its dark now so you cant really see the bars that are here and there around the park. He starts to chase my sister and all i could hear was a bluhhh sound. She literally just ran into this low bar with her neck. At this point i feel bad but what i heard and saw was so funny i couldnt focus anymore. Not 2 sec after she ran into the bar and gave up my 5 year old niece is now the victim and she runs into another low bar with her forehead. Needless to say we all quit the game because obviously its not safe to play at night and it was late.
How many of you have went to the park and played games like this? What games do you like to play when theres a bunch of you together? Whats your funniest memory?