If an enemy appears in a group of two or more of the same type, the game rolls the drop chance for each separately but displays only one item. However, if you kill them simultaneously with an AoE spell (e.g., Earthquake), the game can roll multiple drops and give you all. Tested on PS1 version 1.0—patched in later re-releases but works on original discs.

If you prefer not to use external codes, you can "cheese" the system using specific runes and farming methods. Game Mechanics And Codes - Suikosource

Suikoden II uses a specific internal logic to determine if an enemy leaves an item behind:

When you win a battle, the game generates a random number (0–255). It compares this to the enemy’s drop rate value (e.g., 4 = ~1.5%). If the random number ≤ drop value, the item drops. But the key is: .

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