Games like Roomstack
Games like Roomstack include Tiny Glade, My Dream Setup, Hozy, Is This Seat Taken?, and Townscaper. We matched them by the tags players give Roomstack on Steam (Cozy, Casual, Building, Relaxing, and Cute): closest matches first, and among equally close ones the better-known games.

Tiny Glade
Shared: Building · Relaxing · Cozy

My Dream Setup
Shared: Building · Relaxing · Casual

Hozy
Shared: Cozy · Casual · Relaxing

Is This Seat Taken?
Shared: Casual · Relaxing · Cozy

Townscaper
Shared: Building · Relaxing · Casual

Slime Rancher 2
Shared: Relaxing · Cute · Casual

Lil Gator Game
Shared: Cozy · Casual · Relaxing

Garden Galaxy
Shared: Cozy · Cute · Relaxing

Ropuka's Idle Island
Shared: Cozy · Relaxing · Casual

Minami Lane
Shared: Casual · Cute · Relaxing

Kind Words (lo fi chill beats to write to)
Shared: Cozy · Relaxing · Wholesome

Town to City
Shared: Cozy · Building · Relaxing

Gourdlets
Shared: Relaxing · Building · Cozy

Leaf it Alone
Shared: Relaxing · Casual · Cozy

TOEM: A Photo Adventure
Shared: Cozy · Wholesome · Casual

Small Spaces
Shared: Building · Cozy · Relaxing

Sticky Business
Shared: Casual · Relaxing · Cute

LEGO® Builder's Journey
Shared: Casual · Relaxing · Cute

A Little to the Left
Shared: Relaxing · Casual · Cute

Leafy Corner
Shared: Cozy · Casual · Relaxing

SUMMERHOUSE
Shared: Casual · Relaxing · Building

Woodo
Shared: Cozy · Cute · Wholesome

Placid Plastic Duck Simulator
Shared: Relaxing · Cute · Casual

Spilled!
Shared: Casual · Relaxing · Cozy