Hydro is a simulation game that immerses players in the management of a 1930s-era hydro-electric power station. Players interact with vintage machinery, requiring them to manage supplies, monitor reserves, and maintain equipment to ensure a smooth operation. The game features a dynamic weather system that introduces random conditions affecting power generation and gameplay. Players must also contend with unique township demands, balancing efficiency and maintenance tasks to keep the power station running effectively.

In addition to managing the technical aspects, players must handle their character’s fatigue levels while dealing with auditors who assess performance. Hydro includes a reputation system that tracks player actions, influencing the game’s long-term outcomes. With adjustable difficulty settings, Hydro caters to both casual gamers and hardcore simulation enthusiasts, ensuring a varied and engaging experience with each playthrough.