Infinity Train: Season 4 (Book Four: Duet)
This season started on April 15, 2021. The table lists episodes with recorded air dates up to September 28, 2026.
| Ep | Title and air date | My place |
|---|---|---|
| 1 | The Twin Tapes · 11 min | |
| 2 | The Iceberg Car · 11 min | |
| 3 | The Old West Car · 11 min | |
| 4 | The Pig Baby Car · 11 min | |
| 5 | The Astro Queue Car · 11 min | |
| 6 | The Party Car · 11 min | |
| 7 | The Art Gallery Car · 11 min | |
| 8 | The Mega Maze Car · 11 min | |
| 9 | The Castle Car · 11 min | |
| 10 | The Train to Nowhere · 11 min |
