Merry Christmas (Santa Claus Gift Drop) is a high-polish 2D arcade game built with Unity, designed to deliver a festive and challenging experience. Players take on the role of Santa Claus, flying his sleigh through a dynamically generated winter night, with a single mission: deliver gifts into chimneys with pinpoint accuracy.

Core Gameplay Mechanics
Endless Flight Navigation: The game features a horizontal side-scrolling mechanic where Santa moves at a constant speed. This design focuses the player’s attention entirely on the timing and trajectory of gift drops.
Velocity-Based Gift Physics: Unlike stationary drop games, players must account for the forward momentum of the sleigh. Dropping a gift requires predicting the arc of its fall to ensure it enters the chimney opening perfectly.
Procedural Environment Generation: The world is never the same twice. An intelligent spawner system creates houses, chimneys, and trees at randomized intervals, ensuring that players cannot simply memorize patterns but must react to the terrain as it appears.
Adaptive Difficulty: Subtle variations, such as randomized gift sizes and varying distances between houses, keep the gameplay loop engaging and challenging over time.
Game Logic & State Management
Centralized Game Control: A robust
GameManager
oversees the entire flow, from initialization and scoring to game-over transitions. It ensures that the high score is always tracked and saved locally using Unity's PlayerPrefs system.
Detailed Failure Conditions: To maintain a high stakes environment, the game monitors several "loss" triggers:
Missed Delivery: Flying past a house without a gift landing in the chimney.
Impact Failure: A gift hitting the snowy ground or an obstructive tree.
Input Suppression System: A sophisticated UI/UX feature ensures that players don't accidentally drop a gift when interacting with UI elements like the "Resume" or "Restart" buttons.
Atmosphere & Immersive Systems
Festive Visuals: The game utilizes a particle-based snowfall system that creates a continuous, peaceful winter ambiance without impacting performance.
Comprehensive Audio Suite: The game is powered by a dedicated sound manager that handles:
Start-up engine sounds and looping sleigh flight audio.
Dynamic background music that can be toggled via the settings menu.
Context-specific SFX for successes, failures, and UI interactions.
Technical Architecture
The codebase is modular, separating the flight physics (
SantaController
), the spawning logic (
ChimneySpawner
), and the game rules (
GameManager
). This architecture allows for easy expansion, such as adding new power-ups, different sleigh skins, or new environmental obstacles.