Is TTS considered fanfiction? In short, Emperor can communicate again. He is not amused.
BattleTech:
Davion & Davion (Deceased) - John Davion gets haunted by ghost of his descendant (and magnificent bastard) Hanse Davion. Together they try to save the Star League and prevent the Succession Wars. I linked the last page of the thread because it has links to PDFs of the story.
SB version gave birth to Bushido magic hands meme.
Missadventures of Darius Davion
1,
2,
3 4- Flashman style stories set from 3.SW to to the end of preClan era
This was easier on the tabletop - SI fic, a guy gets transported to 3025 New Avalon, when NAIS HPG experiment goes wrong
Clover Spear - Hanse Davion survives heart attack and KSD gets electroshock treatment early enough. Clans are thus in trouble, but CC and WoB seize the opportunity. Also posted here.
Federated Suns reborn - Jackson Davion uses his brain and his spine when KSD tries to take over the FS and throws her in brig, until Victor returns. A FS wank, but still readable.
3049: Disaster strikes - Clan invasion finds an Inner Sphere which is much harder nut to crack
Warhammer:
All guardsmen party - WH40K RPG adventures of guardsmen who were conscripted into Inquisiton. Hillarity and mayhem aplenty
Robutian Heresy - an alternate universe where traitor legions remained loyal and vice versa. Great writing and some excellent art.
Horus wins - Horus kills the Emperor, but loyalists are far from finished. On hiatus right now as author focuses Federated Suns reborn
Alternate History:
The consequence of an errant shell - lucky hit on Togo's flagship during battle of the Yellow sea and Nicky dying early, dramatically change Russian history. Story only thread.
Rudolf will reign - ROB replaces crown prince of Austro Hungary and his wife with two totally not random people
The Goering slaying - Noir story set in alternate history
Random:
Cobra Commander dialogues - Cobra Commander in Atlas Shrugged. He is disgusted.
The last angel - 2000 years after unknow cataclysm took their homeworld the broken remnants of humanity are part of an interstellar empire, their history and culture gone. Crew of training cruiser finds a massive derilict starship and begins exploring it.
All the little lost boys and girls - a crew of mercenaries and researchers finds secret station, long thought to be a myth. But some secrets are better left undiscovered. Same author as The last angel.