 | Gunforce - Battle Fire Engulfed Terror Island (World) | 1991 | Irem | gunforce | Platform / Shooter Scrolling | 8.54 |
 | Hacha Mecha Fighter (19th Sep. 1991) | 1991 | NMK | hachamf | Shooter / Flying Horizontal | 5.77 |
![Hana to Ojisan [BET] (Japan 911209)](../snapsmall/MS_3606.html) | Hana to Ojisan [BET] (Japan 911209) | 1991 | Nichibutsu | hanaoji | Tabletop / Hanafuda *Mature* | 10.00 |
| | Hana wo Yaraneba! (Japan) | 1991 | Dynax | hanayara | | 0.00 |
 | Hard Head 2 (v2.0) | 1991 | SunA | hardhea2 | Platform / Run Jump Scrolling | 4.67 |
| | Harley Davidson (L-1) (clone of: hd_l3) | 1991 | Bally | hd_l1 | | 0.00 |
| | Harley Davidson (L-3) | 1991 | Bally | hd_l3 | | 0.00 |
 | Hasamu (Japan) | 1991 | Irem | hasamu | Puzzle / Match | 6.75 |
| | Hoops | 1991 | Gottlieb | hoops | | 0.00 |
| | Hurricane (L-2) | 1991 | Williams | hurr_l2 | | 0.00 |
 | Idol-Mahjong Final Romance (Japan) | 1991 | Video System Co. | fromance | Tabletop / Mahjong *Mature* | 0.00 |
| | IQ Pipe | 1991 | AMT | iqpipe | | 0.00 |
| | Janken Man Kattara Ageru | 1991 | Sunwise | jankenmn | | 0.00 |
 | Joe Montana II: Sports Talk Football (Mega-Tech) | 1991 | Sega | mt_stf | Unplayable | 6.67 |
 | Karate Blazers (Japan) (clone of: karatblz) | 1991 | Video System Co. | karatblzj | | 0.00 |
| Karate Blazers (US) (clone of: karatblz) | 1991 | Video System Co. | karatblzu | | 0.00 |
| Karate Blazers (World) | 1991 | Video System Co. | karatblz | Fighter / 2.5D | 5.50 |
 | Ken-Go | 1991 | Irem | kengo | Fighter / 2D | 7.50 |
 | King of the Monsters (set 1) | 1991 | SNK | kotm | Fighter / Versus | 6.30 |
| King of the Monsters (set 2) (clone of: kotm) | 1991 | SNK | kotmh | Fighter / Versus | 0.00 |
