Underrail is an old-school, turn-based isometric role-playing game set in a distant future where humanity survives in a vast network of underground metro station-states. You play a resident drawn into violent conflicts between factions, with exploration and combat framed by the struggle to endure in a harsh subterranean world. That confined setting gives the adventure a distinct identity: its dangers come not only from hostile encounters, but from navigating a society built in the remnants of the old world.
Combat is turn-based and supports markedly different approaches. Weapon choices range from pistols and rifles to crossbows, energy weapons, knives and sledgehammers, while three schools of psionics offer powers such as telekinesis, electrocution, freezing and mental assaults. Players can also avoid direct fights through stealth, lockpicking, computer hacking and pickpocketing, or prepare traps for when violence cannot be avoided. Crafting adds another layer of character planning: many weapons and armor pieces can be made, and crafted equipment can outperform scavenged or purchased gear when skills support it.
The listed format is single-player, so the game’s player-count context is an individual role-playing adventure rather than a shared-session experience. Its appeal rests on choosing how to build a capable character and approach threats, whether through varied weapons, psionic abilities, quiet infiltration or preparation. The combination of faction conflict, underground exploration and tactical combat makes Underrail a focused, systems-driven RPG rather than a conventional action game.