A few months ago, Federation Square's Skyline Terrace was a winter wonderland filled with pop-up igloos and an ice-skating rink. But come January 3, the openair space above Flinders Street Station's eastern railway tracks will be whacking on the sunscreen and shades, and transforming into a warm-weather paradise for the debut of Summertime Social. Sticking around until early April 2020, the huge al fresco summer playground will take over the rooftop space with whole swag of sun-soaked fun. For those after a break from their own backyard, Summertime Social's grassy communal lawn is the place to be. It'll host a stack of free lawn games, including giant Jenga, though it's also your go-to for picnics and sunny chill sessions, as you make the most of the pop-up's food and drink offering. On Sundays, punters can duke it out for prizes and glory at the lawn's weekly giant games battle, while Fridays and Saturdays promise a lineup of sunset DJs spinning from 5–10pm. More games, from bocce to shuffleboard, will be going down in the games lane. These ones you'll need to book and start from $30 per 20-minute session. For a more private summer do, nab your crew one of the comfy huts or converted caravans. The huts can be booked for up to 20 people, while the boho-style caravans have space for 10, customised with your choice of picnic eats, boozy ice cream, beer-filled eskies and board games. Pop-up bars throughout Summertime Social will be serving up tap cocktails, booze-infused slushies (including mango daiquiris and margaritas), beer, wine, spirits and even stocked mini-eskies. Meanwhile, a weekday happy hour means $6 Furphy, cocktails, rosé and prosecco from 4–6pm. As for the food, you'll be able to settle in with woodfired pizzas; Dirty Birdie's fried chicken, salad bowls and burgers; and boozy frozen treats from a pop-up ice cream cart. If you fancy making a day of it, a range of picnic baskets are also up for grabs, including the two-person Classic Basket, loaded with cheeses, party pies, chicken tenders and potato salad. On Saturdays, you can enjoy Summertime Social's bottomless brunch, offering 90 minutes of free-flowing beer, prosecco, mimosas and tap cocktails and your choice of brunch dish for $49. To eat, you can choose from a PBJ ice cream sanga, a BLT, a veggie burger or calzone. Find Summertime Social at Federation Square's Skyline Terrace from Friday, January 3 till April, 2020. It's open from 11am–10pm Monday–Sunday.