The Family Computer (Famicom) featured an audio input on its cartridge port. This allowed for games to expand upon the Famicom's audio capabilities, and was a feature used by a number of cartridge games as well as a handful of disk games for the Famicom Disk System add-on. However, no NES games ever provided additional audio as its cartridge port did not have a provision for external audio input; the original front loading NES had an audio input on its bottom expansion port, but this was never used.
Cartridge Games
| Title | Publisher | Mapper/Sound Chip | Notes |
|---|---|---|---|
| Akumajou Densetsu | Konami | Konami VRC6 | |
| Erika to Satoru no Yume Bouken | Namco | Namco 163 | |
| Esper Dream 2 | Konami | Konami VRC6 | |
| Family Trainer 3: Aerobics Studio | Bandai | Mitsubishi M50805 | Used for voice samples |
| Final Lap | Namco | Namco 163 | |
| Gimmick | Sunsoft | Sunsoft 5B | |
| Just Breed | Nintendo | Nintendo MMC5 | |
| King of Kings | Namco | Namco 163 | |
| Lagrange Point | Konami | Konami VRC7 | |
| Mappy Kids | Namco | Namco 163 | |
| Megami Tensei II: Digital Devil Story | Namco | Namco 163 | |
| Metal Slader Glory | HAL Laboratory | Nintendo MMC5 | |
| Moero!! Pro Tennis | Jaleco | NEC uPD7756C | Used for PCM samples |
| Moero!! Pro Yakyuu | Jaleco | NEC uPD7756C | Used for PCM samples |
| Moero!! Pro Yakyuu '88: Kettei Ban | Jaleco | NEC uPD7756C | Used for PCM samples |
| Moe Pro!: Saikyou-hen | Jaleco | NEC uPD7756C | Used for PCM samples |
| Moe Pro! '90: Kandou-hen | Jaleco | NEC uPD7756C | Used for PCM samples |
| Mouryou Senki Madara | Konami | Konami VRC6 | |
| Rolling Thunder | Namco | Namco 163 | |
| Sangokushi II: Haou no Tairiku | Namco | Namco 163 | |
| Shin 4 Nin Uchi Mahjong: Yakuman Tengoku | Nintendo | Nintendo MMC5 | |
| Shin Moero!! Pro Yakyuu | Jaleco | NEC uPD7756C | Used for PCM samples |
| Terao no Dosukoi Oozumou | Jaleco | NEC uPD7755C | Used for PCM samples |
| Youkai Douchuuki | Namco | Namco 163 |
Famicom Disk System Games
The following are games which use the Famicom Disk System's extra wavetable audio channel.
| Title | Publisher | Notes |
|---|---|---|
| Ai Senshi Nicol | Konami | |
| Apple Town Story | Square | |
| Arumana no Kiseki | Konami | |
| Big Challenge! Go! Go! Bowling | Jaleco | |
| Big Challenge! Judo Senshuken | Jaleco | |
| Bio Miracle Bokutte Upa | Konami | |
| Dirty Pair: Project Eden | Bandai | |
| Doremikki | Konami | |
| Dracula II: Noroi no Fuuin | Konami | |
| Exciting Baseball | Konami | |
| Exciting Basket | Konami | |
| Exciting Billiard | Konami | |
| Exciting Soccer | Konami | |
| Falsion | Konami | |
| Famicom Grand Prix: F-1 Race | Nintendo | |
| Famicom Grand Prix: 3D Hot Rally | Nintendo | |
| Famicom Tantei Club series | Nintendo | Both games in the series, only for sound effects |
| Family Composer | Tokyo Shoseki | |
| Fire Bam | HAL Laboratory | |
| Ginga Denshou: Galaxy Odyssey | Imagineer | |
| Golf Japan Course | Nintendo | |
| Golf US Course | Nintendo | |
| Gyruss | Konami | |
| Hao-kun no Fushigi na Tabi | Square | |
| Hikari Shinwa: Palutena no Kagami | Nintendo | |
| I Am a Teacher: Super Mario no Sweater | Royal Kougyou | |
| I Am a Teacher: Teami no Kiso | Royal Kougyou | |
| Kaettekita Mario Bros. | Nintendo | |
| Kalin no Tsurugi | Square | |
| Kick and Run | Taito | |
| Knight Move | Nintendo | |
| The Legend of Zelda 2 | Nintendo | |
| Lutter | Athena | |
| Matou no Houkai: The Hero of Babel | Pony Canyon | |
| Meikyuu Jiin Dababa | Konami | |
| Monty no Doki Doki Daisassou: Monty on the Run | Jaleco | |
| Metroid | Nintendo | |
| Moonball Magic | Square | |
| Nazo no Kabe: Block Kuzushi | Konami | |
| Otocky | ASCII | |
| Super Mario Bros. 2 | Nintendo | Only used for the ending theme |
| Vs. Excitebike | Nintendo | |
| Yume Koujou: Doki Doki Panic | Fuji TV | |
| Zelda no Densetsu: The Hyrule Fantasy | Nintendo |