Happy STG
Developed by Tomoyuki Mizuma · Published by Tomoyuki Mizuma
At a glance
Overview
An action, indie game by Tomoyuki Mizuma, published by Tomoyuki Mizuma — single-player.
Steam’s own one-line description: “Vertical scroll shooting game. Please avoid the bullets and defeat the enemies and clear the stage. You can set different types of bullets for "Main" and "Sub". You can also use skills. Skills include skills that make powerful attacks and skills that can eliminate bullets fired by enemies.” — developer/publisher text via the Steam store page.
Reception & community
Review sentiment, ownership and peak-concurrent estimates via SteamSpy; tags are player-voted on Steam. Estimates change over time.
Features & modes
Derived from the gameplay modes and feature categories Steam lists for Happy STG.
| Feature | Supported |
|---|---|
| Single-player | Yes |
| Multiplayer | No |
| Co-op | No |
| Online co-op | No |
| PvP | No |
| Cross-platform multiplayer | No |
| Full controller support | No |
| Partial controller support | No |
| Steam Cloud saves | No |
| Steam Achievements | No |
System requirements (PC)
As published on the Steam store page. Requirements can change between updates.
Minimum
- OS *: Windows 7 or greater
- Processor: Core2 Duo
- Memory: 1024 MB RAM
- Graphics: OpenGL 2.1 compliant video card
- Storage: 100 MB available space
Supported languages (2)
Happy STG FAQ
Answered from the official Steam listing as of June 2026. Where something hasn't been announced, we say so rather than guess.
What kind of game is Happy STG?
Steam classifies Happy STG as a Action, Indie game, developed by Tomoyuki Mizuma. Vertical scroll shooting game. Please avoid the bullets and defeat the enemies and clear the stage. You can set different types of bullets for "Main" and "Sub". You can also use skills. Skills include skills that make powerful attacks and skills that can eliminate bullets fired by enemies.
How much does Happy STG cost?
As of June 2026, Steam lists Happy STG at $3.99. Prices and regional pricing change — check the Steam page for the current figure.
Is Happy STG single-player or multiplayer?
Steam lists these modes for Happy STG: Single-player. It lists a single-player mode.
Is Happy STG on PlayStation, Xbox, or Switch?
Our data comes from the Steam (PC) store, which lists Happy STG for Windows. Console availability isn’t in our Steam-sourced data — check the official site or the console store.
Is Happy STG out yet?
Yes — Steam lists a release date of Sep 30, 2019.
What platforms is Happy STG on?
Happy STG is listed for Windows on the Steam (PC) store. Console availability isn't covered by Steam's PC store data — check the official channels.
Is Happy STG single-player or multiplayer?
Steam lists these modes: Single-player.
How much does Happy STG cost?
Steam lists it at $3.99.
Who made Happy STG?
Happy STG is developed by Tomoyuki Mizuma and published by Tomoyuki Mizuma.
Where to get Happy STG
We don't sell games or track prices — this links to the official Steam store page.
View on Steam →Listing details from Valve's public Steam store data. Not affiliated with Valve/Steam, Tomoyuki Mizuma.