Fathom Reach enters Early Access with underwater card battles and player-built defenses

Fathom Reach has entered Steam Early Access, combining underwater card battles with a base that other players can raid while its owner is away. Independent developer Feldsparc released the game on November 4 for Windows, macOS and Linux, with a free demo available on the same platforms.

The central decision is how far to push a dive. Players use their cards to survive encounters and collect resources, then decide whether their hull can withstand another descent. Returning safely lets them invest the haul in a stronger deck or another hull. Continuing offers more opportunities, but resources collected underwater still have to be brought home.

The launch announcement lists 220 cards across four factions. The examples illustrate different approaches to building combinations: armor can contribute to an attack, drones can fill a chamber, and corrosion can wear enemies down. Enemy intentions are visible, allowing the player to plan a sequence around the next threat. Dive modules add another way to alter how a deck’s pieces work together.

A separate challenge built by other divers

The base layer lets players place gun-coral and traps around a chosen Pressure-Heart, then publish the layout for challengers. Defense reports show how those arrangements perform. That creates two connected design problems: assembling a deck for attacking encounters and creating a defensive layout that will challenge someone else’s deck.

The raids are asynchronous. An owner does not have to be sitting in front of the game when a challenger attacks, and the system is not described as a live card duel. The official factsheet also confirms that solo dives can be played offline. Internet access is needed for player raids and defense reports, so the community-built challenges have a different connection requirement from the solo runs.

The demo progress carries into the paid game

Feldsparc’s Steam launch post says everything unlocked and built in the demo transfers when the player buys the game. The earlier demo explanation specifies its limits: up to five dives a day and no Endless Descent. The core progression and base-building systems are otherwise available to sample.

The paid release includes Open Descent, Endless Descent and Daily Signal. In Endless Descent, reaching a Pressure-Heart creates a further choice between securing the haul and pushing onward. That gives demo players a specific additional mode to try without starting their collection again.

The Early Access plan estimates six to twelve months of development, with additional cards and defenses alongside balance and progression changes. That period is provisional. Feldsparc also plans a modest price increase for the completed version, while stating that existing Early Access owners will receive it without another purchase. The current build therefore offers its full dive-and-defense loop now, with the range of tools intended to grow during development.