Railway is a series of train-themed Machine monsters, introduced in Galactic Overlord. They are prominently used by both Anna Kaboom in Yu-Gi-Oh! ZEXAL and Allen Kozuki in Yu-Gi-Oh! ARC-V. All members of this series are EARTH monsters, except for the WATER "Number 27: Dreadnought Dreadnoid".
Most cards of this series are based on either trains or railway infrastructure. The Xyz monsters are based on German World War 2-era warfare armaments, some of which overlap with the base theme as they're based on German railway cannons (these all have the name "Superdreadnought Rail Cannon").
|Revolving Switchyard||Railway Roundhouse|
|Special Schedule||Train schedule|
|Train Connection||Push-Pull Train|
|Urgent Schedule||Train schedule|
The main goal of the theme is to perform Xyz Summons of Rank 10 monsters and ultimately an OTK with the brute force provided by their high ATK/effects. The series is divided into Level 4 EARTH Machine monsters and Level 10 EARTH Machine monsters. The former can provide resources for the Xyz Summons, such as "Ruffian Railcar" and "Runaway Railcar Flying Pegasus", and the latter generally have low ATK and/or harsh effects that encourage the player to use them as materials for an Xyz Summon, such as "Heavy Freight Train Derricrane", "Night Express Knight" and "Speedy Express Bullet Liner". Both profiles can be combined with the effects of "Flying Pegasus" and/or "Revolving Switchyard" to turn the Level 4 into Level 10 monsters and facilitate the access the Xyz Summons, that can be accelerated by some of the aforementioned cards, as well as with "Urgent Schedule". Other easy-to-Summon Level 10 monsters, such as "Malefic" monsters and "Exodius the Ultimate Forbidden Lord" can also be used.
The Xyz monsters of this series generally have effects that are meant to finish the game as soon as possible, with an aggressive strategy of making the most of their high ATK. This tactic is further enhanced with effects that inflict effect damage to the opponent, as well as the capability of attacking multiple times. "Superdreadnought Rail Cannon Gustav Max" and "Superdreadnought Rail Cannon Juggernaut Liebe" are examples of these strategies; the former can inflict 2000 damage without mentioning the sheer battle damage with its 3000-ATK body; the latter can singlehandedly achieve an ATK of 6000 and attack multiple times. Both effects can be more effective if "Derricrane" is detached, destroying an additional card. Additionally, the theme also has a defensive potential in "Number 81: Superdreadnought Rail Cannon Super Dora", that has a high DEF and can protect a monster from all other card effects. Despite not being part of the series, "Superdimensional Robot Galaxy Destroyer" and "Skypalace Gangaridai" can also be used. The former can be used to destroy all opposing Spell/Trap cards, allowing for a safe direct attack; it can be more easily Xyz Summoned with the effect of "Number 27: Dreadnought Dreadnoid". The latter can be used to destroy a card and inflict damage, but cannot attack in the same turn; it can be used to either destroy a troublesome card and pave the way for another Xyz monster to finish the game with a direct hit, or to finish the game right then and there if the opponent has 1000 LP or less.
Casual supportive cards that can be combined with this Deck include "Limiter Removal", "Train Connection", "Qliphort Genius" and a "Shaddoll" engine with the aim of Fusion Summoning "El Shaddoll Shekhinaga".