ROM splicing - 0000-3FFF is from Dr. Mario (Rev 0) 4000-7FFF is from Tetris (Rev A) (Dr. Tetris) @ChickasaurusGL

Evie (ChickasaurusGL) 🌺 | ROM splicing - 0000-3FFF is from Dr. Mario (Rev 0) 4000-7FFF is from Tetris (Rev A) (Dr. Tetris) @ChickasaurusGL | Uploaded May 2022 | Updated October 2024, 5 hours ago.
Surprising that this worked. ^^ Both are 32 KB ROMs, so ROM banking isn't involved. The core game is effectively Dr. Mario, but you can hear the Tetris music playing.

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