Mobile Board Game Development
Porting board game to mobile isn't just "draw board and add taps." Board game rules often assume a human arbiter who resolves edge cases with common sense. In code, each edge case must be explicitly accounted for.
Rules formalization
First step: write complete rules specification as finite state machine. For Monopoly or Ludo-type games, this is dozens of states and transitions. Use State Machine via State pattern or Stateless library (ported to Unity). Each transition has guard conditions + actions. This guarantees: can't transition to invalid state, all rules explicitly coded, testing through unit tests without running Unity.
AI opponent
For perfect information games (chess, checkers, abstract strategies)—Minimax with Alpha-Beta pruning. Search depth depends on game's branching factor. For mobile, limit search time: if AI doesn't find move in 500ms, take best found.
For imperfect information games (cards, hidden moves)—Monte Carlo Tree Search (MCTS). Works well even without complete evaluation function. On iPhone 14, MCTS with 10000 iterations fits in 200ms.
Multiplayer: local pass-and-play
Simplest and most underestimated mode: one phone, multiple players turn-by-turn. Implementation trivial, but conversion to organic sharing high. Add "pass phone" screen with flip animation—local multiplayer ready.
For online mode in board games, Firebase Realtime Database works for small matches: board state as JSON object, observers on both clients. Transaction API guarantees atomic updates—no race condition on simultaneous moves.
Timeline: classic board game without AI—2–4 months; with AI and online multiplayer—4–7 months.