Sky

In Sky, players explore a once-prosperous kingdom using a cape that allows them to fly. The in-game world consists of seven unique realms, each with a variety of areas to explore, and a theme representing different stages of life. There is also Home and Aviary Village, with Home being a small island which serves as the world hub and the starting point and Aviary Village as a village with shops and a place that the player can customize as their house. Throughout the world, players encounter "spirits" that allow them to unlock items in return for in-game currency, and "children of light" which give players "winged light". When a player has collected enough winged light, their cape level goes up, allowing them to fly further.

The game places heavy focus on social mechanics. Players are able to meet and befriend one another, and can unlock new abilities like chat and sending gifts as their friendship grows. There are also many cosmetic items to collect including capes, masks, hairstyles, hats, pants, shoes, musical instruments, expressions, and more. These items can be obtained using in-game currency or, in some cases, bought with real money. Some cosmetics are only available to certain players, such as the original beta cape, exclusive to those who played the beta version prior to the full release.

The game was developed and published by American studio Thatgamecompany over the course of seven years, developing a custom game engine based on their previous work on PlayStation titles, to initially support the Apple Metal API, later expanding it to add support for other platforms as well. The game servers are hosted on Amazon Web Services infrastructure (credited in-game as AWS), with parts of the backend being written in Erlang in cooperation with Amber Studio.

Sky features ongoing seasonal events, with new storylines and unique spirits and items. Seasons and events follow a freemium strategy, where some of the cosmetics sold by spirits require a paid "Season Pass" or via microtransactions from the in-game shop. The seasons have a unique currency called "seasonal candles", which can be used to purchase seasonal items and are converted to regular candles when the season ends. Seasonal spirits may return as "Traveling Spirits" in the future, which players can give their candles and hearts to receive seasonal items for a limited time, albeit at a higher price. Some seasonal events involve collaborations with literary works and fictional characters such as The Little Prince, Sanrio's Cinnamoroll, the Moomins, and Alice's Adventures in Wonderland.

Review aggregator website Metacritic awarded the game an 82 out of 100 based on 18 reviewers, as well as awarding it the number one shared iOS game of 2019, number three most discussed iOS game of 2019, and number 13 best iOS game of 2019.

5 out of 10 stating "Sky is a refreshingly moving and robust game on the iOS platform, and one best shared with others – especially folks who might not normally pick up a video game." GameSpot scored the game an 8 out of 10, giving exceptional praise to the visuals, animations and music, but admitting that "return visits to previous environments aren't nearly as captivating as your first trip." 5 out of 10, likening the game to its predecessor as "a bigger and bolder follow-up that expands on what made Journey so great." Destructoid, like many other reviewers, praised how it is a game that "most everyone should experience", but was highly critical of the touch controls and the lack of control over the character.