The Last of Us Season 2: Three Reasons Spores Need to Return

Warning: This piece contains spoilers for The Last of Us Part II game.

The second season of The Last of Us is premiering on April 13, 2025, and we just got another look at the series in a new trailer over the weekend. But amidst all the excitement for the acclaimed game adaptation’s next entry, something stood out to us in the latest trailer: the confirmation that spores will be included. This might seem like a small detail to the uninitiated, but it was actually one of the show’s biggest deviations from the source material. Instead of spores, the first season primarily used tendrils emerging from infected individuals as the way the cordyceps infection spreads. When asked by Variety (during Season 1’s run) about the shift to tendrils, series creators Craig Mazin and Neil Druckmann said they wanted to try new things with the show’s version of events. So why the change of heart?

Well, there are several important scenes in The Last of Us Part II game that hinge on the spores, and perhaps the writing team didn’t anticipate how much they’d need that story element eventually before making the change for the first season. Let’s take a look at why the spores are so important to Part II and how this speaks to the care creators need to take when making sweeping changes in adaptations.

What Are Spores in The Last of Us?

If you’ve only seen the show and not played the games, a quick refresher: the cordyceps infection in the games is primarily transmitted through bites or scratches from infected, but can also be transmitted via fungal spores, typically in underground areas where the fungus can fester unabated. Many sections of the games feature the characters moving through such areas while wearing gas masks to prevent breathing in the deadly spores. This was purely for story and not gameplay (you can’t lose your gas mask and die, for example), but the spores were an important atmospheric element, serving as a visual metaphor for how the fungus was changing and taking over the world right from the root, if you’ll pardon the pun.

In The Last of Us Season 1, the spores were omitted, with the creators recycling the tendril idea from concept art for the first game. Not that there’s anything wrong with making changes in adaptations (we’ve previously made the case for that about The Last of Us here at IGN), but such changes should be purposeful. Getting rid of the spores felt like an arbitrary choice, especially since it raises multiple questions about the world-building now that they’re being included in Season 2. To be fair, Mazin said in the Variety interview that “to say that our world is devoid of them would not be accurate. We don’t quite know yet.” But that doesn’t change that the world as presented in Season 1 doesn’t have them, so Season 2 including them feels odd.

So much of daily life as a survivor in the world of the Last of Us games revolves around doing everything possible to avoid infection, including being aware of how to detect and avoid spores, that their never coming up in the last season is a bit jarring. The case could be made that the show’s fungus recently evolved the spores, but that’s hard to justify when we’re dealing with such a short period of time (a small handful of years at most) passing between seasons. Regarding the inclusion of spores in Season 2, Druckmann claimed at SXSW that there is a “dramatic reason” why the spores are returning. We won’t know exactly what he means until we see the new season, but looking at the second game, there are multiple big scenes where not having the spores would be a serious obstacle to try to write around.

The Biggest Spore Scenes That Could Appear in The Last of Us Season 2

With Season 2 jumping right into adapting The Last of Us Part II, it’s worth examining the ways the spores are likely to be used in telling that game’s story. We already know Part II will take multiple seasons to adapt, so we might not see all of these scenes in the upcoming season, but they’re good to keep in mind either way.

Ellie and Dina’s Subway System Attack

The earliest is when Dina, Ellie’s companion and love interest in Part II who will be played by Isabela Merced in the show, learns that Ellie is immune to infection. While being attacked by infected in the remains of the spore-filled Seattle subway system, Ellie’s mask is damaged, leading her to take it off in front of a shocked Dina. Once they’re out of danger, Ellie tells Dina that she is immune, which is a massive turn in their relationship. This would not be easy to replace with a bite or tendril scene because a huge part of it is Dina saying she can share her mask with Ellie (proving how much she cares for Ellie), which is what prompts Ellie to take her own mask off and save Dina’s life.

Nora’s Infection and Ellie’s Quest for Vengeance for Joel

Later on, Ellie confronts Nora, one of Abby’s friends and a target on Ellie’s hit list. While holding Nora at gunpoint in a confrontation with Washington Liberation Front soldiers, Ellie purposefully tosses herself and Nora into the spore-filled basement, knowing that it will make it difficult for the WLF to chase her. With Nora infected by spores, Ellie corners her in the basement and demands to know Abby’s location. When Nora asks why she should give Abby up when she’s effectively already dead, Ellie says she can make Nora’s death quick or make her final moments as tortuous as possible. Again, the spores are what makes the scene function on an in-universe level, but this is also a crucial moment dramatically because it cements how hardened Ellie has become from Joel’s death and how dark she’s willing to go in her quest to avenge him.

Abby, Lev, and the WLF vs. the Seraphites

There’s also a spore-related scene that’s critical to Abby’s arc. While traveling with new character Lev on a search for surgical supplies, Abby (who will be played by Kaitlyn Dever in Season 2) has to find an extra mask for Lev so they can travel through a spore-filled section of a hotel. The fact that Lev doesn’t have a mask is a peek into the mentality of the island-dwelling Seraphite nation he comes from, where they have no need to worry about infection from “demons” (as they refer to the infected), but it’s also a moment where Abby takes significant risk to help both Lev with the mask and Lev’s sister Yara with the medical supplies. Abby softening towards Lev and Yara despite them coming from an enemy faction (Abby is a member of the WLF, which is at war with the Seraphites) gives her new dimension after the game initially establishes her as Joel’s cold-blooded killer.

Now, we don’t know for sure if the creative team on the series looked at Part II and thought “what have we done?” for not including spores. But the fact that they’re walking back a not-insignificant creative choice from the first season indicates that they realized the spores are a critical part of the game’s lore and narrative. Again, there’s nothing inherently wrong with making changes in adaptation; different mediums have different priorities. But it’s also important to consider the long-term ramifications of making big changes to in-universe lore in case they become roadblocks down the line. At least for now, it looks like The Last of Us has folded on the spore front, but hopefully its creators and those of other adaptations think twice before throwing away such important world-building elements of the source material.

Carlos Morales writes novels, articles and Mass Effect essays. You can follow his fixations on Bluesky.