Monster Lab

Monster Lab is set in the eerie world of Uncanny Valley where the evil Baron Mharti rules with a cruel hand. The player takes on the role of an apprentice scientist who must perform a vast array of intricate experiments to create their very own monster from over 100 million possible monster part variations on offer. Taking control of your monster, the player can then explore the land; searching for ingredients to make more monster parts, hunting out other monsters to defeat in combat, uncovering quests to embark upon or simply competing in the numerous mini-games available.

Unknown Opcode Errors
This title displays Unknown Opcode errors at startup, and cannot be started. GFX FIFO: Unknown Opcode (0x52 @ 000000007FFF0000, preprocess=false). This means one of the following:
 * The emulated GPU got desynced, disabling dual core can help
 * Command stream currupted by some spurious memory bug
 * This really is an unknown opcode (unlikely)
 * Some other sort of bug

Shortly followed by: Illegal command 52 CPBase: 0x0087a280 CPEnd: 0x0089e260 CPHiWatermark: 0x00020000 CPLoWatermark: 0x00012000 CPReadWriteDistance: 0x000002e0 CPWritePointer: 0x0087ae80 CPReadPointer: 0x0087aba0 CPBreakpoint: 0x00000000 bFF_GPReadEnable: true bFF_BPEnable: false bFF_BPInt: false bFF_Breakpoint: false bFF_GPLinkEnable: false bFF_HiWatermarkInt: false bFF_LoWatermarkInt: false

Refer.