Miren: Trails Unfold

Happy Boss Pull Pin is a fun office-themed pull pin logic puzzle game. Your target is to help the office boss safely collect all sparkling diamonds and reach the exit without touching dangerous red fire hazards by pulling out golden safety pins in the correct order.

### Core Pull Pin Puzzle Rules
Each level is filled with movable golden lever pins and fixed purple obstacle rods that divide the glass office elevator space into multiple zones. Pull pins one by one to change the falling track of diamonds and block the path of red fire blocks. If the boss falls into fire or diamonds drop outside the elevator, you will fail the stage and need to restart.
Complete the collection of all blue diamonds and let the boss land safely on the bottom floor to unlock the victory pop-up with confetti celebration labeled "Happy Boss!". The level selection screen adopts metal brushed texture, with the first 4 levels unlocked and all subsequent stages locked by padlock icons waiting to be cleared.

### Modern Office Elevator Visual Style
All puzzle levels take place inside a tall glass office elevator, with a panoramic city skyscraper view outside the transparent windows. The minimalist flat cartoon art matches urban office atmosphere: gray metal elevator frames, light blue glass windows, cartoon office boss character in white shirt and red tie, shiny crystal diamonds and blazing red fire obstacles form sharp visual contrast.
The clean industrial metal UI runs through the whole game, including brushed silver level select panels, circular function buttons for restart, home and next level.

### User-Friendly Game UI & Level Unlock System
Top HUD displays current level number, reset button and pause button for quick control. The level map supports page switching via left and right arrow buttons, arranging stages in a 4-column grid layout. There is no time limit, so players can take enough time to think over the pin pulling sequence without rush.
Suitable for casual players of all ages, this brain teaser tests your logical reasoning and forward prediction. Figure out the correct pin pull order, save the boss from fire traps, gather all diamonds, and unlock hundreds of challenging office elevator puzzle stages.