Bastion

A hack-and-slash RPG featuring a reactive narrator, various unlockable weapons, weapon upgrades, practice mini-games and optional difficulty modifiers, set in an imaginary world in the aftermath of an uncertain apocalypse, in which the player embodies a teenager with a troubled past as he and the narrator work together to rebuild the world out of a persisting hub called the Bastion.

The game takes place in the aftermath of the Calamity, a catastrophic event that suddenly fractured the city of Caelondia as well as the surrounding areas of the game's world into many floating pieces, disrupting its ecology and reducing most of its people to ash. Players take control of the Kid, a silent protagonist who awakens on one of the few remaining pieces of the old world and sets off for the eponymous Bastion, where everyone was supposed to go in troubled times.

The only survivor he meets there is an elderly man named Rucks, the game's narrator, who instructs him to collect the Cores that once powered Caelondia. A device in the Bastion can use the power of the crystalline Cores to create landmasses and structures, as well as enable the Kid to travel farther afield via "skyways" that propel him through the air.

During his quest, the Kid meets two more survivors: Zulf, an ambassador from the Ura, underground-dwelling people with whom Caelondia was once at war; and Zia, an Ura girl who was raised in Caelondia. Both of them return to the Bastion, but upon reading a journal that the Kid discovers, Zulf intentionally damages parts of the Bastion's central device (the monument) and returns to Ura territory.

The Kid learns that the journal belonged to Zia's father, Venn, who had worked for the Caelondians. He had helped Caelondian scientists ("Mancers") build a weapon intended to destroy the Ura completely to prevent another war.

Venn rigged the weapon to backfire, so that when he was finally forced to trigger it, the resulting Calamity destroyed most of Caelondia as well. To repair Zulf's damage to the Bastion, the Kid starts collecting Shards, a lesser form of Cores.

As he obtains the penultimate shard needed, the Ura attack the Bastion, damaging it and abducting Zia. In the next seven days, The Kid engages in sporadic skirmishes in Ura territory.