I use to play paintball. I know the taste of paint extremely well. Get some of your buddies together and play "Last Man Standing."

How about playing capture the flag with just one flag. The flag stays in the center of the playing field. Each team will try to take the flag back to their base or starting point without getting hit.
Now I play Airsoft. Different equipment. Same game. Same tactics.

Remember safety comes first. Treat each paintball or airsoft gun like a real gun. Don't bring shame to our game.