Online Card Game Development

I'm looking to create an online version of a physical card game, accessible on both desktop and mobile browsers. The game should include both single-player (against AI) and multiplayer modes, featuring turn-based strategy mechanics.

Key Features:
- Game Modes: Both single-player and multiplayer
- Mechanics: Turn-based strategy
- Social Features: Integrated chat system, friends list, and leaderboards

Ideal Skills and Experience:
- Strong background in game development, especially for turn-based strategy games
- Experience with integrating social features like chat systems and friends lists
- Proficient in developing for both desktop and mobile browsers
- Ability to deliver a user-friendly and engaging interface

Please provide examples of similar work done and an estimated timeline for completion.