Root Cause

The contract assumes that the game will always end properly via the endGame function. There is no mechanism to handle scenarios where a player might abandon a game without completing it.

Impact

• Stalled Games: Players who abandon games may have their state preserved indefinitely, preventing them from starting new games.

• Storage Bloat: Accumulated data from incomplete games can consume unnecessary storage on the blockchain.

• Resource Wastage: The contract may maintain unnecessary state information, leading to inefficiencies.

Recommendations

• Game Timeout Mechanism: Implement a timeout feature that automatically ends games after a certain period of inactivity.

• State Cleanup: Provide a function to clean up or reset game states for inactive players.

• Player Notifications: Inform players about the timeout policy to encourage timely completion of games.