Arcade machine operators and game developers rely on key player engagement metrics to measure success and optimize performance. The most common metrics include:

1. Playtime: Tracks how long players spend on a machine, indicating game appeal and replay value.

2. Coin Drop Rate: Measures the frequency of coin or credit insertions, reflecting monetization efficiency.

3. Player Retention Rate: Evaluates how often players return to the same machine over time.

4. Revenue Per Player (RPP): Calculates average earnings per player, helping assess profitability.

5. Session Frequency: Monitors how often a machine is played within a specific period.

These metrics help operators refine game design, pricing, and placement to maximize engagement and revenue. By analyzing these KPIs, arcade businesses can enhance player experiences and drive long-term success.