| .hot |
The Sims Sound File |
| .hs |
Haskell Script |
| .h3m |
Heroes 3 Map File |
| .h4r |
Heroes of Might and Magic IV Data File |
| .honmod |
HON Modification Manager File |
| .hps |
HPL Script |
| .hum |
OMSI Human Configuration File |
| .h5u |
Heroes of Might and Magic V Mod File |
| .ham |
Descent 2 Resource File |
| .hog |
Descent Mission File |
| .hi |
High Scores File |
| .hwmap |
Hedgewars Drawn Map File |
| .h2o |
Battle Realms Game Data File |
| .hws |
Hedgewars Saved Game |
| .hwd |
Hedgewars Demo File |
| .heartssave-ms |
Microsoft Hearts Save File |
| .hpk |
HPack Compressed Archive |
| .he0 |
Humongous Entertainment Game Archive |
| .he1 |
Humongous Entertainment Game Archive |
| .he2 |
Humongous Entertainment Game Archive |
| .he |
Humongous Entertainment Game Archive |
| .hqm |
Hardcore Questing Mode Data File |
| .h5m |
Heroes of Might and Magic V Map |
| .hat |
HA Tunnel Plus config file, Duck Game hat file, C header annotation file |