Happy STG

Happy STG is a vertical-scrolling shooter in which you dodge enemy bullets, defeat enemies and clear stages. You move your character with the mouse or keyboard arrow keys. If an enemy or its bullet hits your character, you lose HP; reaching 0 HP means a game over.

Weapons and skills

Your Main and Sub slots can each hold a different type of bullet, and you can switch between them during a stage. Bullet types include shots that travel straight ahead, spread shots and bullets that home in on nearby enemies. You can choose a type to suit the situation, such as using spread shots against groups of small enemies or straight shots to focus on a mostly stationary boss.

Skills can deal powerful attacks, clear enemy bullets or restore HP. Clearing a stage earns bullets, skills and items as rewards, with rewards available for each difficulty level.

Stages and difficulty

Each stage progresses from encounters with small enemies to a boss battle, and the story continues from stage to stage. You can practice each stage's boss separately to learn how to avoid its attacks before attempting the full stage.

The three difficulty levels are Easy, Hard and Chaos. Easy limits the number of bullets, while Chaos fills the screen with more elaborate bullet patterns. Chaos becomes available after you clear all stages on Hard.

Bosses and bullet patterns

Each boss has a theme, such as fire, flowers or bubbles, and attacks with designs based on its theme and character image. Some bullets move in ways that reflect their shapes: flower-shaped bullets move like blooming flowers, while leaf-shaped bullets sway like leaves.