Kashmir, I could not recommend paintball enough. I've played since the very beginning, about 1985 (those are my original pants! Sadly lost the shirt in a move). It's honest family fun. The kids' rifles shoot just as hard as yours, and those little suckers are fast!
The key is to find a well run field, where the refs are not the owner's jerk kids. Also you want mil-sim, not Speedball. Speedball is played on a tennis court sized field, with no concealment or sneaking, the cover is inflatable ballons. It was invented for TV.
My field above has five fields on it, three in the woods, one with buildings, and a trench field. You want paint grenades for the building field. They got a trench-digging machine and made a maze of trenches; I don't like that one. They also have a tank. It's a pickup and they attached four rifles together in the back to make a quad shooter.
You can get a basic semi-auto and all the gear you need for about $200. If you like it though, you'll end up spending a lot more. My X7 with it's mods cost $800 altogether.
The whole reason paintball is wonderful is because the paintballs can hurt. You chrono your gun to shoot just under 300 fps. That's 204 mph. A solid hit will leave a big bruise and might break the skin (but most don't). Pain produces fear, and fear does three wonderful things:
1. Heightens the senses
2. Magnifies the imagination
3. Limits the ability to think logically
You'll find yourself running faster than you ever have and
diving into cover. And having a blast.
One more quick pic of Dawn. Can't show you the rest (she was getting a couple of things pierced, crazy girl), but at least she's smiling. She looks much better blonde