Ebbtide FOB Building and Base Defense

Ebbtide, the zombie survival RTS by ProjectAlive, has you choose a location and build a forward operating base (FOB) from walls, weapons, depots, and lights—then hold it while the Nexus sends hordes that stack to climb walls and press every gap you leave open.

Read the gameplay overview for map-scale play, supply and logistics for keeping depots fed, and the FAQ for release and platform facts.

What does Steam say you can build at an Ebbtide FOB?

The Steam store page lists HESCO and concrete walls, gates, scaffolding so troops can fight from the wall top, gun nests, CIWS, mortar pits, an ammo depot, a fuel point, and lighting when you stand up a forward operating base. CIWS also appears in developer naval footage tied to destroyer defense (October 8, 2026 on X).

After placement, Steam’s logistics rules apply: forces only resupply or refuel at your own bases, so a finished FOB still depends on convoys described on the supply page.

Image: official Steam store screenshot © ProjectAlive. Early development footage — details may change before release.

What did September 2026 FOB videos show?

On September 28, 2026, ProjectAliveDev posted FOB construction footage covering perimeters, elevated walkways, open-and-close gates, defensive weapons, and lighting, followed by a second clip testing defense against hordes. Another post the same day showed squads entering, closing the gate, and holding.

September 29, 2026 added “The FOB is built. Now it needs supplies.”, aligning construction with the supply loop. Map placement ties to Los Angeles districts on the operations layer.

How do hordes assault Ebbtide bases?

Steam describes zombies stacking to climb walls and rooftops and grabbing low-hovering helicopters. On September 13, 2026, the developer wrote that since watching World War Z, they wanted hordes that stack on each other, can be shot down to collapse piles, and make rooftops part of the front line.

Image: official Steam store screenshot © ProjectAlive. Early development footage — details may change before release.

Hive coordination—ambushes, road cuts, and base sieges—is summarized on The Nexus page.

Official channel video “A Zombie RTS Where Rooftops Aren’t Safe” (gxhJbCGqZWA) matches this rooftop and horde-pressure theme:

Ebbtide — A Zombie RTS Where Rooftops Aren't Safe (ProjectAlive) — YouTube

Ebbtide — A Zombie RTS Where Rooftops Aren't Safe (ProjectAlive)

What does a surrounded FOB look like in development?

Store art shows a walled FOB with aircraft and guns inside while explosions and tracers ring a dense horde outside—useful context, not a promise of a specific mission layout.

Image: official Steam store screenshot © ProjectAlive. Early development footage — details may change before release.

Mortar and howitzer positions appear in other shots; see fire support and naval for M777, HIMARS, and ship strikes callable from map or battlefield. Long-term survival links to the world campaign aboard TF-1 “Ark.”

Image: official Steam store screenshot © ProjectAlive. Early development footage — details may change before release.

Sources

• Ebbtide on Steam — observed 2026-10-22
• ProjectAliveDev on X — observed 2026-10-22
• Ebbtide on YouTube — observed 2026-10-22