There are various games played and held around Step City; not all of them are for children, and some use the entirety of the city as their playing-field. Many of them are also faction-specific. Information and rules are found on individual pages.
Old Maid Pickpocket (Roller Banditos-specific, often involving unwilling people from other factions)
Pogs (UG-specific, more of a collectible and secondary form of currency than a game these days; it's played by people outside of the UG faction, but mostly by kids, and the UG kind of has the monopoly on it)
Shipping (Roller Banditos-specific; yes, they make a game out of shipping people; there's a few banditos who make an income out of being an official Bookie and take bets)