Games like AColony
Games like AColony include Valheim, Oxygen Not Included, RimWorld, Enshrouded, and Dwarf Fortress. We matched them by the tags players give AColony on Steam (Colony Sim, Base Building, Online Co-Op, Survival, and Exploration): closest matches first, and among equally close ones the better-known games.

Valheim
Shared: Online Co-Op · Survival · Base Building

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

RimWorld
Shared: Colony Sim · Base Building · Survival

Enshrouded
Shared: Base Building · Survival · Online Co-Op

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

Frostpunk
Shared: Survival · Colony Sim · City Builder

Settlement Survival
Shared: Colony Sim · City Builder · Survival

V Rising
Shared: Base Building · Survival · Online Co-Op

The Planet Crafter
Shared: Base Building · Online Co-Op · Survival

7 Days to Die
Shared: Survival · Base Building · Online Co-Op

Raft
Shared: Survival · Base Building · Online Co-Op

ICARUS
Shared: Survival · Base Building · Online Co-Op

Kingdoms and Castles
Shared: Colony Sim · City Builder · Base Building

Space Haven
Shared: Colony Sim · Base Building · Survival

Manor Lords
Shared: Base Building · City Builder · Colony Sim

Colony Survival
Shared: Colony Sim · Base Building · Survival

Abiotic Factor
Shared: Online Co-Op · Survival · Base Building

Timberborn
Shared: Colony Sim · City Builder · Base Building

Stonehearth
Shared: Colony Sim · City Builder · Survival

ASKA
Shared: Colony Sim · Survival · Base Building

IXION
Shared: Colony Sim · Survival · City Builder

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

Sons Of The Forest
Shared: Survival · Base Building · Exploration

Palworld
Shared: Survival · Online Co-Op · Base Building