Determining the right number of prizes for your toy crane machine requires balancing player satisfaction with operational profitability. Start by calculating approximately 20-30% of your machine's total capacity as your initial prize count. For a standard machine holding 150-200 items, this translates to 30-60 prizes visible at any given time.

The key factors to consider include your machine's size and claw strength. Larger machines with stronger claws can accommodate more prizes, while smaller units require strategic placement to maintain challenge and appeal. Always ensure prizes are stacked at varying heights - some easily reachable, others requiring more skill.

Monitor player success rates closely. Ideal win percentages should fall between 15-25%. If players win too frequently, reduce prize density. If wins are too rare, increase accessible prizes or adjust claw strength. Consider prize value distribution: mix high-value items (15% of inventory) with medium (35%) and low-value prizes (50%) to create excitement while protecting your margins.

Regularly rotate prize positions and refresh inventory based on player demographics and seasonal trends. Remember that proper prize calculation directly impacts player retention and your bottom line - too few prizes discourages play, while too many reduces profitability and challenge appeal.