Most Popular Sci-Fi TV Shows — SeasonTracker Tracking Data September 2026

September 14, 2026

288 SeasonTracker users are tracking A Knight of the Seven Kingdoms, making the HBO series the most tracked sci-fi and fantasy title on the platform for the week of September 14, 2026. That figure represents roughly 16 percent of the 1,801 users currently tracking at least one of the 7,580 unique shows in the SeasonTracker database.

The top of the category is tightly packed. Only nine trackers separate first place from second, and the gap between first and fourth is 26. Below that, the numbers thin out quickly: seventh place Wednesday sits 37 trackers behind sixth place Pluribus, and eighth place The Boys is another 43 back.

Here is the full top 15 by tracker count:

1. A Knight of the Seven Kingdoms (HBO) 288 trackers 2. Severance (Apple TV) 279 trackers 3. Fallout (Prime Video) 269 trackers 4. Silo (Apple TV) 262 trackers 5. House of the Dragon (HBO) 248 trackers 6. Pluribus (Apple TV) 225 trackers 7. Wednesday (Netflix) 188 trackers 8. The Boys (Prime Video) 145 trackers 9. Stranger Things (Netflix) 133 trackers 10. Black Mirror (Channel 4) 119 trackers 11. The Lord of the Rings: The Rings of Power (Prime Video) 119 trackers 12. The Witcher (Netflix) 107 trackers 13. For All Mankind (Apple TV) 106 trackers 14. 3 Body Problem (Netflix) 105 trackers 15. INVINCIBLE (Prime Video) 98 trackers

Silo is the most active title in the category. SeasonTracker users added six trackers to the Apple TV series over the past week, the largest weekly gain in the top 15, and 28 over the past month, more than double the next best monthly figure. At its current rate Silo is the only show in the group with a realistic path to the top three before the end of the quarter, sitting seven trackers behind Fallout.

Apple TV accounts for four of the top 15 entries, including Severance at number two, Pluribus at number six and For All Mankind at number 13. Those four titles combine for 872 trackers. Prime Video also places four shows in the ranking, with Fallout leading that group at 269.

For All Mankind and INVINCIBLE both gained three trackers week over week, tying for the second largest weekly movement. For All Mankind is a notable case because its monthly gain of two is smaller than its weekly gain of three, indicating that its tracking activity has concentrated in the last seven days rather than building steadily.

The Boys is the only title in the top 15 that recorded no change across either measurement window, holding flat at 145 trackers week over week and month over month. It is also one of two ended series in the ranking. The other, Stranger Things, is still picking up trackers, adding one over the week and four over the month at 133 total.

At the lower end of the table the margins are narrow enough that small shifts matter. Black Mirror and The Rings of Power are tied at 119, and only nine trackers separate tenth place from fifteenth place INVINCIBLE.

These rankings update weekly and are driven entirely by what SeasonTracker users add to their own lists. Start tracking your shows on SeasonTracker to log episodes, follow return dates and shape next week's numbers.