ROM (like the one found in the Steam library) to verify ownership and extract game assets. "Lock-On" Background Originally, Sonic & Knuckles
: If you own the collection on Steam, you can find the file in your Steam library folder: ...\Steam\steamapps\common\Sega Classics\uncompressed_roms\ . sonic-knuckles-wsonic3.bin
Running this ROM allows for a continuous playthrough from Angel Island Zone (Sonic 3) to The Doomsday Zone (S&K) without interruption. Standalone Sonic 3 ends at Launch Base Zone, while standalone S&K starts at Mushroom Hill Zone. The lock-on ROM bridges these narratives. ROM (like the one found in the Steam
: To reunite these halves, Sega created a unique "Lock-On" cartridge for Sonic & Knuckles Standalone Sonic 3 ends at Launch Base Zone,
: Get the base software from the official site.
sonic-knuckles-wsonic3.bin is a binary ROM image that contains the complete, fused experience of Sonic 3 and Sonic & Knuckles as a single, contiguous file.