This guide will explain which add-ons are available for which Train Sim World games and the acronym/shorthand name they are commonly referred to by.
Colour Key Guide
Orange Add-ons
These routes support all the latest TSW 4 features, including new windshield rain effects, and improved OHLE rendering.
Blue Add-ons
These routes support the new lighting model introduced in TSW 3. These routes will support volumetric fog in TSW 4.
Green Add-ons
These routes have no additional upgrades.
| DLC Name | Type | TSW1 | TSW2 | TSW3 | TSW 4 | Acronym |
| Amtrak Acela Express | Loco | No | No | Yes | Yes | Acela |
| Amtrak SW1000R | Loco | Yes | No | No | No | SW1000R |
| Antelope Valley Line: Los Angeles - Lancaster | Route | No | No | No | Yes | ALV |
| Arosalinie: Chur - Arosa | Route | No | Yes | Yes | Yes | ARL |
| Arosalinie: Arosa Aggregates Pack | Expansion | No | No | No | Yes | Arosa Pack |
| Bahnstrecke Bremen – Oldenburg | Route | No | No | Yes | Yes | BRO |
| Bahnstrecke Salzburg - Rosenheim | Route | No | No | No | Yes | SRM |
| Bakerloo Line Route | Route | No | Yes | Yes | Yes | BKL |
| Berninalinie: Tirano - Ospizio Bernina | Route | No | No | No | Yes | BLE |
| Birmingham Cross-City Line: Lichfield - Bromsgrove & Redditch | Route | No | No | Yes | Yes | BCC |
| BNSF SD70ACe | Loco | No | No | Yes | Yes | BNSF SD70ACe |
| Brighton Main Line: London Victoria - Brighton | Route | No | Yes | Yes | Yes | LBN |
| BR Class 20 'Chopper' | Loco | Yes | Yes | Yes | Yes | Class 20 |
| BR Class 31 | Loco | Yes | Yes | Yes | Yes | Class 31 |
| BR Class 33 | Loco | Yes | Yes | Yes | Yes | Class 33 |
| BR Class 52 'Western' | Loco | Yes | Yes | Yes | Yes | Class 52 |
| BR Heavy Freight Pack | Expansion | Yes | Yes | Yes | Yes | BR Heavy Freight |
Blackpool Branches: Preston - Blackpool & Ormskirk Route Add-On | Route | No | No | No | Yes | PBO |
| Cajon Pass: Barstow - San Bernardino | Route | No | No | Yes | Yes | CJP |
| Caltrain MP15DC Diesel Switcher | Loco | Yes | Yes | Yes | Yes | MP15DC |
| Caltrain MP36PH-3C ‘Baby Bullet’ | Loco | Yes | Yes | Yes | Yes | MP36PH-3C |
| Canadian National Oakville Subdivision: Hamilton - Oakville | Route | Yes | Yes | Yes | Yes | OSD |
| Cane Creek: Thompson - Potash | Route | No | Yes | Yes | Yes | CCB |
| Cargo Line Vol. 1: Petroleum Add-On | Expansion | No | No | No | Yes | CargoLine |
| Cathcart Circle Line: Glasgow - Newton & Neilston | Route | No | Yes | Yes | Yes | CCL |
| Clinchfield Railroad: Elkhorn - Dante | Route | No | Yes | Yes | Yes | CCR |
| CSX C40-8W | Loco | No | Yes | Yes | Yes | C40-8W |
| CSX GP40-2 | Loco | Yes | No | No | No | GP40 |
| DB BR 101 | Loco | No | Yes | Yes | Yes | DB BR 101 |
| DB BR 155 | Loco | Yes | Yes | Yes | Yes | DB BR 155 |
| DB BR 182 | Loco | Yes | Yes | Yes | Yes | DB BR 182 |
| DB BR 187 | Loco | No | Yes | Yes | Yes | DB BR 187 |
| DB BR 204 | Loco | Yes | Yes | Yes | Yes | DB BR 204 |
| DB BR 363 | Loco | No | Yes | Yes | Yes | DB BR 363 |
| DB BR 403 ICE 3 Railbow | Loco | No | No | Yes | Yes | ICE3 Railbow |
| DB G6 Diesel Shunter | Loco | No | Yes | Yes | Yes | DB G6 |
| Diesel Legends of the Great Western | Expansion | No | Yes | Yes | Yes | Diesel Legends |
| Dispolok BR 182 | Loco | No | No | Yes | Yes | Dispolok BR 182 |
| East Coast Main Line: Peterborough - Doncaster | Route | No | No | No | Yes | PDB |
| East Coastway: Brighton - Eastbourne & Seaford | Route | Yes | Yes | Yes | Yes | ECW |
| Edinburgh - Glasgow: Engineering Express Pack | Expansion | No | No | No | Yes | EDNPack |
| Fife Circle Line: Edinburgh - Markinch via Dunfermline & Kirkcaldy | Route | No | No | No | Yes | FCE |
| Glossop Line: Manchester - Hadfield & Glossop | Route | No | No | Yes | Yes | MGP |
| Great Western Express | Route | Yes | Yes | Yes | Yes | GWE |
| Harlem Line: Grand Central Terminal - North White Plains | Route | No | Yes | Yes | Yes | HAR |
| Hauptstrecke Hamburg - Lübeck | Route | No | Yes | Yes | Yes | HML |
| Hauptstrecke München - Augsburg | Route | No | Yes | Yes | Yes | HMA |
| Hauptstrecke Rhein-Ruhr: Duisburg - Bochum | Route | Yes | Yes | Yes | Yes | HRR |
| Horseshoe Curve: Altoona - Johnstown & South Fork | Route | No | Yes | Yes | Yes | HSC |
| Island Line 2022: BR Class 484 EMU | Route | No | Yes | Yes | Yes | Island Line |
| Isle Of Wight: Ryde - Shanklin | Route | No | Yes | Yes | Yes | IOW |
| LGV Méditerranée: Marseille - Avignon | Route | No | Yes | Yes | Yes | LGV |
| Linke Rheinstrecke: Mainz - Koblenz | Route | No | No | Yes | Yes | LFR |
| LIRR M3 EMU | Loco | Yes | Yes | Yes | Yes | LIRR M3 |
| LNER Class A3 60103 Flying Scotsman Steam | Loco | No | No | No | Yes | Scotsman |
| London Overground: Gospel Oak - Barking Riverside | Route | No | No | No | Yes | BKG |
| London Underground 1938 Stock EMU | Loco | No | Yes | Yes | Yes | 1938 Stock |
| Long Island Rail Road: New York - Hicksville | Route | Yes | Yes | Yes | Yes | LIRR |
| Main Spessart Bahn: Aschaffenburg - Gemünden | Route | Yes | Yes | Yes | Yes | MSB |
Maintalbahn: Aschaffenburg - Miltenberg Route Add-On | Route | No | No | No | Yes | MTB |
| Midland Main Line: Leicester - Derby & Nottingham | Route | No | No | Yes | Yes | MML |
| Nahverkehr Dresden -Riesa | Route | No | Yes | Yes | Yes | DRA |
| NEC: New York | Route | Yes | No | No | No | NEC |
| New Journeys - CSX SD40 | Loco | No | No | Yes | Yes | NJ CSX SD40 |
| New Journeys - S-Bahn Köln BR 423 | Loco | No | No | Yes | Yes | NJ BR 423 |
| New Journeys - Silver 1972 Stock | Loco | No | No | Yes | Yes | NJ 1972 Stock |
| New Journeys Expansion | Expansion | No | Yes | No | No | EHP |
| Niddertalbahn: Bad Vilbel - Glauburg-Stockheim | Route | No | No | Yes | Yes | NID |
| Northeast Corridor: Boston - Providence | Route | No | Yes | Yes | Yes | BPE |
| Northeast Corridor: New York - Trenton | Route | No | No | Yes | Yes | NYT |
| Northern Trans-Pennine: Manchester - Leeds | Route | Yes | Yes | Yes | Yes | NTP |
| Peak Forest Railway: Ambergate - Chinley & Buxton | Route | No | No | Yes | Yes | PFR |
| Peninsula Corridor: San Francisco - San Jose | Route | Yes | Yes | Yes | Yes | SFJ |
| Rail Head Treatment Train | Loco | No | No | Yes | Yes | RHTT |
| Rail Operations Group BR Class 37/7 | Loco | No | No | Yes | Yes | ROG Class 37 |
| Rapid Transit Route | Route | Yes | Yes | Yes | Yes | RT |
Railpool BR 193 Vectron | Loco | No | No | No | Yes | Vectron |
Regional Railways BR Class 323 Add-On | Loco | No | No | No | Yes | RegionalRailways |
| RhB Anniversary Collection | Route | No | Yes | Yes | Yes | RhB Anniversary |
| Rhein-Ruhr Osten: Wuppertal - Hagen | Route | Yes | Yes | Yes | Yes | RRO |
| Ruhr-Sieg Nord: Hagen - Finnentrop | Route | Yes | Yes | Yes | Yes | RSN |
| Sand Patch Grade | Route | Yes1 | Yes | Yes | Yes | SPG |
| Santa Fe F7 | Loco | No | No | Yes | Yes | Santa Fe F7 |
| S-Bahn Vorarlberg: Lindau - Bludenz | Route | No | No | No | Yes | VBRG |
| S-Bahn Zentralschweiz: Luzern - Sursee | Route | No | Yes | Yes | Yes | LZN |
| Schnellfahrstrecke Kassel - Würzburg | Route | No | No | Yes | Yes | KWG |
| Schnellfahrstrecke Koln-Aachen | Route | No | Yes | Yes | Yes | SKA |
| ScotRail Express: Edinburgh - Glasgow | Route | No | No | Yes | Yes | EDN |
| Semmeringbahn: Mürzzuschlag - Wiener Neustadt | Route | No | No | No | Yes | SBN |
| Sherman Hill: Cheyenne - Laramie | Route | No | Yes | Yes | Yes | SMH |
| Southeastern BR Class 465 EMU | Loco | No | Yes | Yes | Yes | Class 465 |
| Southeastern Highspeed: London St Pancras – Ashford Intl & Faversham2 | Route | No | Yes | Yes | Yes | SEH |
| Southern BR Class 313 EMU | Loco | No | Yes | Yes | Yes | Class 313 |
| Spirit of Steam: Liverpool Lime Street - Crewe | Route | No | Yes | Yes | Yes | SoS |
| Tees Valley Line: Darlington – Saltburn-by-the-Sea | Route | Yes | Yes | Yes | Yes | TVL |
| Tharandter Rampe: Dresden - Chemnitz | Route | No | Yes | Yes | Yes | DCZ |
| Thameslink BR Class 700/0 | Loco | No | No | Yes | Yes | Class 700 |
| The Holiday Express - Runaway Elf | Route | No | No | Yes | Yes | HDX |
| Union Pacific Heritage Collection | Loco | No | No | Yes | Yes | UPHeritage |
| West Cornwall Local: Penzance - St Austell & St Ives | Route | No | Yes | Yes | Yes | WCL |
| West Cornwall Steam Railtour | Expansion | No | No | Yes | Yes | WCS |
| West Somerset Railway | Route | Yes | Yes | Yes | Yes | WSR |
Additional Notes:
1 - Sand Patch Grade was known as CSX Heavy Haul in the original Train Sim World and was only available on PC.
2- Southeastern High Speed was upgraded as of Train Sim World 3 where the line was extended to Ashford International and the previously separate Class 465 was integrated into the route, among other improvements.