The following is based on Van Buren and has not been confirmed by canon sources.

Re-Establish Mordecai was going to appear as a quest in Van Buren, the canceled Fallout 3 by Black Isle Studios.

v·d·e Quests in Van Buren Blackfoot Village · Bloomfield Space Center · B.O.M.B.-001 Blackfoot Village Acquire Guns for the Blackfoots · Become a Friend of the Blackfoots · Become a Hangdog Warrior · Build an Air Pump System for the Furnace Caves · Build a Still for the Town cut · Clear the Rubble In Front of the military Door in Mine Cave 1 · Collapse The Cave Entrances · Convince the Blackfoots to Sell Water · Cure the Devil Dog · Cure the Sick Dogs · Damn Kurisu's Soul · Destroy all of the Spore Plants · Find the Quarantine Robot · Fix Fast-Hands' Leg · Fix The Ski Lift cut · Free the Blackfoots from the Daughter of Hecate · Free the Slaves · Free Slave X · Get Garun some Booze · Get Garun some Damn Tools · Get Marie apprenticed to Teacher · Get Rid of the Coyotes · Help Chagas Take Over the Blackfoot Tribe · Help Garun Get Caught Up · Help the Guards, They're Bored cut · Improve The Smelting Furnace · Kill off the Radscorpions · Kill The Blackfoots · Kill the Devil Dog · Kill the Mutant Giant Bats · Kill the Rats For the Blackfoots and Hangdogs · Learn the Hangdog Fighting Style · Let the Hangdogs use the Devil Dog For Breeding · Make the Hangdogs Appreciate the Coyotes cut · Mine For Coal Powder · Mine For Guano · Mine For Silver · Open the Secondary Silver Mine · Poison the Tribe's Water cut · Reconcile Fast-Hands and the Daughter of Hecate · Recruit Marie for the Daughters of Hecate cut · Retrofit the Lift Engine for another purpose · Save Kurisu's Soul · Set Up Chagas as the Gunsmith in these Parts · Take Over the Blackfoots cut · Take Over the Hangdogs  · Tame the Devil Dog · Train Garun in GunWork · Update the Blackfoot Outdoorsman Lab cut Bloomfield Space Center Build Sid's Self-Esteem · Challenge Kyle to Fight for Rusty Hooks' Leadership · Convince Bear to Try and Take Over Rusty Hooks · Convince Rusty Hook Guards to Allow Passage (cut) · Convince Sid to Kill Himself · Destroy Launch Pad Security Bots via More Conventional Means · Disable Bear's C4 Heart Bomb · Disable Launch Pad Security Turrets Via Security Computer · Disable Trigger of Bear's C4 Heart Bomb · Disable Launch Pad Security Turrets Via Destroying Power Generator · Input Legit Mission Control Computer Access Codes · Enter Legitimate Mission Control Launch Codes · Get Control of Bear's C4 Heart Bomb · Get Sid to tell PC about Bear's Heart Bomb and Kyle's Radio Trigger · Hack into Launch Pad Security Computer · Hack Mission Control Computer Access Codes · Help Sid Complete the Mega-Flamer · Make it Through the Parking Structure Unscathed (cut) · Reprogram Security Turrets to Fire upon Security Bots & NCR Guards · Restore Sub-Reactor from 45% Efficiency to 60%-85% Efficiency · Rewire Trigger of Bear's C4 Heart Bomb to Explode · Sneak Past Launch Pad Turrets, Security Bots, and NCR Guards, and Gain Access to Computer Control Room · Use the Mega-Flamer to Eliminate the Rusty Hooks B.O.M.B.-001 Blow up reactor core · Build a freeze-gun · Change the targeting solutions on the missiles · Convince Coleridge that Presper deceived them · Disable outside security bots via computer · Disable S.O.R.-1000 Beta & Delta through combat · Disable S.O.R.-1000 Beta & Delta through computer · Find schematics for Freeze-gun · Overload reactor core · Reactivate S.O.R.-1000 Alpha · Magnetize Alpha's treads so he can space walk on the inner hull supports · Manually disable 5 out of 8 nuclear missiles (Missile Room 1) · PC repairs, or helps repair, Alpha's damaged limbs · Successfully sneak past S.O.R.-1000 Beta and Delta · Successfully sneak past security bots on inner hull · Successfully knock out or kill the engineer without alerting Presper and his men Boulder · Burham Springs · Denver Boulder Boulder Scientists Research or Write · Code Yourself Smarter · Defeat the Baggers/Larsen's Team · Destroy the Jackals · Destroy the Truck · Dope Radaway for Larsen · Dump Allies In the Dome · Establish Radio Contact & Trade With Denver · Find Out About Wagner · Find Out What ZAX is Calculating · Fix Things in the Dome · Get the Medical Implants · Give Slaves to Boulder to Make Robobrains · Heal Helen's Kids · Quarantine the Glow Bugs · Jimmy the Cannibal · Research Plague Data · Robobrain a CNPC · Sleep Through Presper's Holocaust · Stabilize the Reactor · Take Computer Classes · Tell the BOS about the Dome · Trade Holodisks to the Geeks · Use Think Tank for Data Burham Springs Blow Up the Mines for CoS · Extinguish the Fires of Burham Springs · Get Rid of Lingering Geckos · New Canaan Connection · Repair the Water Pump Denver Analyze Their Drug Stockpile · Break Into the Box, surface/Sewer level · Defeat Bombay Jack at the Box · Defeat Bombay Jack in his Canyon · Defeat Dogbody · Defeat the CRB-S Units · Defeat the Legion Slavers · Defuse the Mines on the Freeway to Boulder · Destroy/Drive Off NCR Military · Fix Job/Mr Handy · Fix the Radio Tower · Get the Brewery Running again · Get the Elevator Cable · Get Garcia out of his coma · Get Jimmy T a Doctor's Bag · Get them a Geiger Counter · Get the Generator from the Old Camp · Get the Salvagers some fruit or vitamins · Kill All the Dogs · Kill Radioactive Lizards · Kill the Evil Salvagers · Like Father Like Son · Prepare/Fix Union Station · Recover Plague Outbreak & Riot Documents · Repair the PA/Klaxon system · Reprogram Job so he can leave Denver · Rescue the Legion's Slaves · Start Trade With NCR or New Canaan · Tell the Hangdogs About the Denver Dogs · Use the Big Radio to Signal ARGOS · Use the PA/KLaxon to Get Rid of the Dogs Fort Abandon · Grand Canyon · Hoover Dam Fort Abandon - Grand Canyon - Hoover Dam Clear out critters in Scum Pits for possible hydroponics lab · Clear out Sub-level 1 - Classified of all the monsters · Discover lost Hoover Dam war and Sub-level 1 history and relaying information to FOA · Discover Sub-level 1 · Do Bob's bounty hunter jobs · Expose Crimson Caravan to Governor Dodge using evidence and helping Major Fleming with the arrest · Get City Council attendance back to norm · Get Mary-Joe to stop turning tricks & get access to Scum Pits · Get Meeting with Governor Joseph Dodge · Get school attendance up to norm · Give filtration schematics to former BOS scribes for better water purification process · Help Beatrice in a bar fight · Join up with the 3-Some Caravan Company · Join up with the Crimson Caravan Company as spy for 3-Some · Recalibrate the two working power generators to be more efficient and increase power · Relay new history from traveling the wasteland to Candice · Successfully extort money out of Ailis McLafferty using evidence · Successfully frame 3-Some Caravan Co. for extortion and murder · Successfully get regular shipments from Denver for materials to build hydroponics lab in Scum Pits · Successfully Negotiate Peace between NCR and BOS · Successfully spy on the Crimson Caravan Company for 3-Some Caravan Co. · Teach class on Wasteland survival Jericho · Maxson's Bunker · Mesa Verde Jericho Build a biodiesel generator for the Jericho water plant · Build an automated water pump · Exterminate the vermin · Find and return Ivan, the escaped worker · Find out who's been stealing from Anson · Fix the leaks in the plant · Kill Jeremiah · Negotiate a water contract with Hoover Dam · Poison the water shipments · Sabotage the water plant Maxson's Bunker Cure the commander · Establish trade · Find contacts · Find COS · Find the codes · Find the poisoner · Peacemaker · Repair Computer · Repair Forklift · Repair Memory · Repair Vents · Repair Water Chip Mesa Verde Acquire the Ciphers' enriched uranium · Ask the Ciphers to process Zax's raw data · Bring a GECK to Isaac in exchange for his power armor · Build an alarm for Trig · Convince Isaac to tell you what the power armor security codes are · Cure Radian · Deal with the Vipers · Figure out what Denom did to the crops · Forge an alliance between the BoS and the Ciphers · Get more food to the Ciphers · Kill the weedlings · Repair the computer so the all the Ciphers can access the old knowledge · Rescue the captured Ciphers · Resolve the Alexandra-Blackjack situation · Restock the Molerat Caves · Restore the crop fields with the Miracle Wheat · Sabotage the wind turbine for the Vipers Nursery · Ouroboros · Reservation The Nursery Collect wasteland animal samples worth preserving and bring them to the Nursery · Destroy the carnivorous plants that are taking over the gardens · Explore the valley and discover the tragedies that have befallen it · Find a replacement pipe for the power plant · Find a replacement robo-brain shell for the central computer · Gain entry to the Nursery · Heal the central computer of her ails · Restore power to the Nursery and all of its facilities but especially the Repository · Restore power to the Nursery central computer · Restore the functionality of the distribution system · Start up GECK production Ouroboros Caesar's Legion agents · Expose Hecate · Open the gates · Plague cure · Play matchmaker · Rescue Adrian The Reservation Acquire Jillian · Blackmail Marty · Colonel Green's Quest · Eliminate the Scaven-picker pests · Fetch the cable for the heavy lift · Fix air filtration device · Gain entrance into the Reservation Town · Get Hermes XIII launch codes · Hook up Betty and Hank by freeing (acquiring) Jillian · Learn the Scaven-picker's gibberish language · Learn the Scaven-picker's melee fighting style, "Shinkpapa" · Learn the Scaven-picker's unarmed fighting style, "Powpapa" · Player acquires Measles as a companion · Sell "smooch" to the Scaven-pickers · Smooch dealer · Teach the Scaven-pickers to make their own Rad-X · The trouble with Florence Tibbets Prison · Twin Mothers · Vault 29 Tibbets Prison Bypass Security Door 13 · Escape Cell Block 13 · Get Key to Armory · Reprogram guide bot Twin Mothers (Vault 29) Betray Sharon · Betray Trisha · Choose to deal with the raiders · Choose to deal with the wasteland creatures · Deliver a disk · Discover the dish · Discover the vault · Discover why Alaya will not marry Eldron · Find the Nursery location · Restore security · The Blessing of the goddess · The voice of the goddess · Trisha's accident