Games like Star Birds Supporter Upgrade
Games like Star Birds Supporter Upgrade include Game Dev Tycoon, Mini Motorways, Totally Accurate Battle Simulator, Cities: Skylines, and 911 Operator. We matched them by the tags players give Star Birds Supporter Upgrade on Steam (Downloadable Content): closest matches first, and among equally close ones the better-known games.

Game Dev Tycoon
Shared: Single-player · Simulation · Steam Achievements

Mini Motorways
Shared: Single-player · Strategy · Simulation

Totally Accurate Battle Simulator
Shared: Single-player · Simulation · Steam Achievements

Cities: Skylines
Shared: Single-player · Simulation · Steam Achievements

911 Operator
Shared: Single-player · Simulation · Strategy

Plague Inc: Evolved
Shared: Single-player · Strategy · Simulation

House Flipper
Shared: Single-player · Simulation · Steam Achievements

Papers, Please
Shared: Single-player · Indie · Simulation

Cookie Clicker
Shared: Single-player · Steam Achievements · Family Sharing

The Scroll of Taiwu : Beyond The Dome
Shared: Single-player · Steam Achievements · Family Sharing

Mount & Blade II: Bannerlord
Shared: Single-player · Strategy · Steam Achievements

Mini Metro
Shared: Single-player · Strategy · Steam Achievements

Two Point Hospital
Shared: Single-player · Simulation · Steam Achievements

Plants vs. Zombies GOTY Edition
Shared: Single-player · Steam Achievements · Strategy

Bloons TD 6
Shared: Single-player · Strategy · Steam Achievements

Banished
Shared: Single-player · Steam Achievements · Strategy

Chinese Parents
Shared: Single-player · Steam Achievements · Family Sharing

Papa's Freezeria Deluxe
Shared: Single-player · Steam Achievements · Simulation

Hearts of Iron IV
Shared: Single-player · Strategy · Steam Achievements

FTL: Faster Than Light
Shared: Single-player · Steam Achievements · Strategy

Nodebuster
Shared: Single-player · Casual · Steam Achievements

Mountain
Shared: Single-player · Simulation · Indie

Startup Company
Shared: Single-player · Simulation · Steam Achievements

Dorfromantik
Shared: Single-player · Steam Achievements · Family Sharing