Games like ISLANDS MIGHT FLY
Games like ISLANDS MIGHT FLY include Oxygen Not Included, Kingdoms and Castles, Prison Architect, RimWorld, and Space Haven. We matched them by the tags players give ISLANDS MIGHT FLY on Steam (Management, Space, Colony Sim, Capitalism, and RTS): closest matches first, and among equally close ones the better-known games.

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

Kingdoms and Castles
Shared: Colony Sim · Management · Strategy

Prison Architect
Shared: Colony Sim · Management · Strategy

RimWorld
Shared: Colony Sim · Management · Strategy

Space Haven
Shared: Colony Sim · Space · Management

Stronghold Crusader HD (2012)
Shared: Colony Sim · Management · Strategy

Dyson Sphere Program
Shared: Space · Management · Base Building

Manor Lords
Shared: Management · Strategy · Base Building

The Universim
Shared: Colony Sim · Management · God Game

Farthest Frontier
Shared: Strategy · Building · Colony Sim

IXION
Shared: Space · Colony Sim · Strategy

Against the Storm
Shared: Management · Strategy · Colony Sim

Workers & Resources: Soviet Republic
Shared: Strategy · Management · Base Building

Becastled
Shared: Strategy · Colony Sim · RTS

Planetbase
Shared: Colony Sim · Space · Strategy

Dwarf Fortress
Shared: Colony Sim · Management · Strategy

Kingdoms Reborn
Shared: Colony Sim · Management · Strategy

Ostriv
Shared: Management · Colony Sim · Strategy

Going Medieval
Shared: Colony Sim · Management · Strategy

They Are Billions
Shared: Colony Sim · Strategy · RTS

Empires of the Undergrowth
Shared: Strategy · Colony Sim · Management

Foundation
Shared: Management · Strategy · Medieval

Infection Free Zone
Shared: Management · Base Building · Strategy

The Crust
Shared: Space · Colony Sim · Base Building