Puzzle Piece is the premier information broker in the infamous nation of Freeport, leading one of the most powerful and wealthy organizations in the islands. However, after months of absence from Freeport, he returns to find everything he built in shambles and his lieutenants fighting over the remnants. With chaos reigning in the streets, the Council tells him to get his house in order or see his life’s work swept away. Unfortunately for Puzzle, there are forces in Freeport that don’t want to see him succeed. Nobody can be trusted, nothing is safe—not even his deepest secrets.

A chronological sequel to Northern Venture.

Three rules:

Understand these, then contract negotiations may begin.

A side story to Chengar Qordath's The Freeport Venture. A different perspective to the infamous port city.
Written with permission.

This story is a sequel to Midnight's Shadow: Succession Crisis

Midnight Sparkle is a rising star amongst the magi. She has proven herself time and again against threats as warlocks, hags, werewolves, and fey, but her recent successes yet leave her ambitions wanting.

An opportunity presents itself when the Archmagus of Eastmarch announces his retirement. The conclave to determine his successor—what should be a mundane thing—reveals a most tainted legacy as long-forgotten foes push Midnight to her very limits.

Sunset Shimmer originally went to Freeport to escape Celestia's influence, and to make some progress towards becoming an alicorn princess. She's certainly done her share of good in the infamous city of rogues, but after almost two years away from Canterlot she doesn't feel any closer to achieving her big goals. At this point, any reasonable pony could wonder if they made a mistake...

Faced with the unpleasant prospect of possibly going back to Canterlot in order to advance her goals, Sunset finds herself with one last option to preserve her independence: the great dragon Argentium the Runescaled, far to the north, wants to meet with her. However, her journey becomes far more than a simple social call, and Sunset has no idea just how much danger she and her friends will face.

Or how much she'll have to sacrifice—not just for her dreams, but survival.

This story is a sequel to To Serve and Protect

Twilight Sparkle finds herself dealing with the aftermath of Tirek’s attack on Equestria. Among the problems before her is the broken artifact: Shadow’s Armor. Damaged in a battle with Tirek, Twilight is given the opportunity to help repair the ancestral armor, but when she suggests possibly making improvements she finds that not everypony agrees with the idea. For many ponies have very different ideas on what should be done with Shadow’s Armor, and it will be Twilight’s job to find a successful compromise between them.

Inspired by the heroics of the mysterious mare known as the Stable Dweller, Silver Storm, a guard of the town of Marefort, decides to go on a daring mission to rescue her captured brother. Of course things rarely go as planned and her attempts at heroism drags her into a tangled web of plots and conspiracies as warring factions vie for control over the last great city: Dise.

Spanish Version translated by Spaniard-Kiwi: https://www.deviantart.com/spaniard-kiwi/art/Fallout-Ecuestria-Heroes-996263393

This story is a sequel to Freeport Venture: Blood and Iron

War rages throughout Equestria. The return of the Crystal Empire has seen years of strife and millions dead as Princess Celestia’s forces strain against Sombra's seemingly endless hordes.

However, the entry of Freeport’s forces turn the tide in Equestria’s favor. Archon Sunset Shimmer and her army smash into the fray, breaking the long, brutal siege of Manehattan and shifting the balance in Equestria’s favor. With Sombra's army falling back to his home territories, there's finally reason to hope again.

If only they knew something far, far worse than Sombra loomed on the horizon.

This story is a sequel to Freeport Venture: Auction Night

As Freeport’s foremost problem solver, Puzzle Piece knows that nothing is ever simple. An easy job today can create complications months or even years down the line. Sunset Shimmer’s acquisition of the Black Codex—a potent, ancient book of black magic—was just such a job. Now the warlocks she took it from have come to Freeport to take it back, and to put an end to Sunset for ruining their plans.

Puzzle Piece has no intention of letting that happen. Whether he can stop them is another matter entirely.

This story is a sequel to Midnight's Shadow

Every year, the children of the Kicker Clan gather for an annual snowball fight to train them to work and fight as a unit. Hoping to gain an advantage in this year's contest, Gale Kicker asks her friend Magus Midnight Sparkle to join her team. Little does she realize the horrible mistake she made by inviting a cryomancer to a snowball fight.

Mis-communication has started many a war, but in this case maybe calling it a war was too generous.

The "war" is over, Twilight has successfully orchestrated a bloodless end to the Griffons' aggression, but only now does she realize that there is more to winning than she had first assumed, especially against a nation that holds war as a central part of their culture...

Now Twilight must deal with the aftermath while facing a challenge she never anticipated: being seen as a conqueror.

This can be read alone, but I recommend reading the letter that started it all for a chuckle and a little exposition. This series of expositional one-shots can also give some additional world-building.