| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| September 2020 |
|
The Time-Travelling Caveman | RHCP Digital | Collection | |
| September 2020 |
|
The Time-Travelling Caveman | Doubleday (UK) | Collection | |
| September 2020 |
|
The Time-Travelling Caveman | Penguin Audio | Collection | |1 |
| October 2020 |
|
The Time-Travelling Caveman | Doubleday (UK) | Collection | 1 |
| August 2021 |
|
The Time-Travelling Caveman | Corgi Children's | Collection | |
| July 2022 |
|
Der zerstreute Zeitreisende | Piper (Germany) | Collection | 9 |