Games like Surviving the Abyss
Games like Surviving the Abyss include Frostpunk, Kingdoms and Castles, Oxygen Not Included, Settlement Survival, and Manor Lords. We matched them by the tags players give Surviving the Abyss on Steam (City Builder, Colony Sim, Exploration, Underwater, and Building): closest matches first, and among equally close ones the better-known games.

Frostpunk
Shared: City Builder · Colony Sim · Survival

Kingdoms and Castles
Shared: City Builder · Colony Sim · Management

Oxygen Not Included
Shared: Colony Sim · Base Building · Building

Settlement Survival
Shared: City Builder · Colony Sim · Building

Manor Lords
Shared: City Builder · Base Building · Management

IXION
Shared: City Builder · Colony Sim · Survival

They Are Billions
Shared: Colony Sim · Base Building · City Builder

Dwarf Fortress
Shared: Colony Sim · City Builder · Base Building

Endzone - A World Apart
Shared: City Builder · Colony Sim · Survival

Prison Architect
Shared: Colony Sim · Building · City Builder

Banished
Shared: City Builder · Colony Sim · Survival

RimWorld
Shared: Colony Sim · Base Building · Survival

Workers & Resources: Soviet Republic
Shared: City Builder · Base Building · Building

Timberborn
Shared: City Builder · Colony Sim · Building

Against the Storm
Shared: City Builder · Building · Base Building

Empires of the Undergrowth
Shared: City Builder · Colony Sim · Base Building

Space Haven
Shared: Colony Sim · Base Building · Survival

Ratopia
Shared: Colony Sim · Building · City Builder

Farthest Frontier
Shared: City Builder · Building · Colony Sim

Ostriv
Shared: City Builder · Colony Sim · Management

Going Medieval
Shared: Colony Sim · City Builder · Base Building

Infection Free Zone
Shared: City Builder · Base Building · Management

Cities: Skylines
Shared: City Builder · Building · Management

Norland
Shared: City Builder · Colony Sim · Base Building