| Version | Serial | Size | CRC32 | Number of Codes | |||
|---|---|---|---|---|---|---|---|
| Jetsons, The - Cogswell's Caper | |||||||
| (USA) | NES-JN-USA | 384K | 2BF61C53 | 30 | |||
| Jigoku Gokuraku Maru | |||||||
| (Japan) | PAC-9Z | 256K | 045E8CD8 | 17 | |||
| Jikuu Yuuden - Debias | |||||||
| (Japan) | NAM-DE-4900 | 192K | 22D6D5BD | 7 | |||
| Jimmy Connors Tennis | |||||||
| (USA) | NES-JT-USA | 128K | 00E95D86 | 18 | |||
| Jing Hua Yuan | |||||||
| Jing Hua Yuan | 0K | 1 | |||||
| JJ | |||||||
| (Japan) | SQF-JJ | 128K | B39A3F5B | 7 | |||
| Joe & Mac | |||||||
| (USA) | NES-CJ-USA | 256K | 26D3082C | 44 | |||
| Joe & Mac - Caveman Ninja | |||||||
| (Europe) | NES-CJ (FRG/ESP/SCN/UKV)) | 256K | 04142764 | 5 | |||
| John Elway's Quarterback | |||||||
| (USA) | NES-JQ-USA | 64K | CF322BB3 | 3 | |||
| John Smith Special Agent | |||||||
| John Smith Special Agent | 0K | 4134B332 | 8 | ||||
| Jordan vs Bird - One on One | |||||||
| (USA) | NES-OE-USA | 128K | 303D4371 | 8 | |||
| Joshua & the Battle of Jericho | |||||||
| (USA) (v6.0) (Unl) | WT-JC-6 | 256K | 99083B3A | 4 | |||
| Journey to Silius | |||||||
| (USA) | NES-4S-USA | 256K | E2C4EDCE | 75 | |||
| Journey to the Centre of the Alien | |||||||
| (World) (Aftermarket) (Homebrew) | 73K | EDE880E6 | 4 | ||||
| Journey to the West | |||||||
| (Asia) (Ja) (Unl) | 128K | 0F20210D | 5 | ||||