Calculator for app development cost estimation employing Unity or Unreal Engine developers in Japan, the US, and France for Gaming applications. This calculator focuses on the unique and often high costs associated with game development, which vary significantly based on game type (e.g., casual 2D, hyper-casual, complex 3D RPG, VR/AR experiences). Unity and Unreal Engine are powerful game engines offering extensive tools, but skilled developers command competitive salaries in Tokyo (JP), major US gaming hubs (like Los Angeles or Austin), and Paris/Lyon (FR), known for its strong game development scene. Key cost determinants include game design complexity (storyline, levels, characters, game mechanics), 2D/3D graphics and animation quality, sound design and music composition, physics engine implementation, artificial intelligence (AI) for non-player characters (NPCs), and multiplayer functionalities (networking, server infrastructure). The calculator will prompt for the number of game assets, the need for custom shaders or visual effects, and integration with platform-specific services (e.g., Apple Game Center, Google Play Games). Monetization strategies (in-app purchases, ads, premium model) also affect development complexity. Rigorous testing and quality assurance (QA) are crucial for games and can be a substantial part of the budget. Post-launch costs for bug fixes, content updates (new levels, characters, items), server maintenance for multiplayer games, and marketing are also significant. The choice between Unity (often favored for mobile and indie games) and Unreal Engine (known for high-fidelity graphics) can also influence developer availability and cost.