On the PlayStation back in the day, this series called Monster Rancher (Monster Farm in Japan) was a thing. It went on for a few games, including onto the PS2, and had a gimmick involving summoning monsters from whatever CDs (or DVDs for PS2 games) were placed in the console. For games not on a disc-based system and others, there was some other method. For whatever reason I've decided to just put as many CDs as I can in my PlayStation to figure out what monsters come up.
A few notes about this database:
This is using the NTSC/US original disc release of the original Monster Rancher game on an unmodified PS1 and PS2. The game on both systems gives the same results. I have not tested on PS3, but it may possibly produce similar results.
This does not cover the Switch/Android/iOS ports, as those use a different system, instead drawing from a database that likely has different results and effectively limited selection.
The save file used for this testing has effectively no progress in the game and is only used to bypass the intro segment, so these results are for a starter breeder. Some results may change slightly for higher ranks.
I have given as many details about the discs as I can, but results may potentially vary depending on slight unmarked differences in re-releases or significant degradation of disc condition.
I do not currently own all of the discs in this list, as some were previously borrowed or owned. Those I do own have been accumulated over time from various sources and may not accurately represent my past, present, or future musical taste.
Results are very much not guaranteed using any kind of unofficial emulation. This goes double for image files of the source discs. If an emulator does manage to replicate this game's behavior exactly, wonderful.
Custom burned or duplicated discs are not in this list, this is only for officially mass-produced discs of at least a minimal degree. There may be a way to engineer a disc to produce a specific monster, but this is not the page for that.
Audio: Typical music (or other recorded audio) CD. May also be Enhanced CD format or similar.
DualDisc: Short-lived experimental audio CD format consisting of a CD-formatted side and a DVD-formatted side on the same disc. May not read in some drives due to not being exactly to Compact Disc specifications.
PC/Data: Typical PC CD mainly composed of data readable from Windows, Mac, Linux, or other computing devices. May also be Redbook format or similar.
Dreamcast: The CD-readable section of a Sega Dreamcast GD-ROM, typically consisting of a data/info track and a second audio track with a recording stating that this is a GD-ROM disc.
PS1: A PlayStation format game CD, typically black on the data side.
PS2: A PlayStation 2 format game CD (as opposed to the more common DVD format for the system), typically blue on the data side.
Saturn: A Sega Saturn format game CD.
Updated On Occasion
Total entries: 0
Unique monsters: 0
Rare monster occurrences: 0
Currently using the Papa Parse CSV parsing library.