Save game compatibility depends on the library version of GnollHack included in various port builds. The following builds and port versions are compatible with each other.
| Compatibility Group | GnollHack Library Version Number | Modern Port Version Number | Cross-platform Compatibility1 | Save Game Transfer Behavior |
|---|---|---|---|---|
| C | 4.3.0 Build 1 – Current | 3.0 – Current | All platforms, guaranteed | Official support for save game transfer. Keeps transferred save game files eligible for top scores after transfer. |
| B | 4.2.0 Build 1 – 4.2.0 Build 146 | 1.73 – 2.146 | All platforms, not guaranteed | Moving save games across platforms make them non-scoring. |
| A | 4.1.2 Build 7 – 4.1.3 Build 55 | 1.13 – 1.72 | Android & iOS | Save game transfer not possible |
- 1 Cross-platform compatibility means if you can transfer saved games from one platform to another.