Serious Sam Shatterverse vs Serious Sam 4: Roguelite or Sequel
Quick Answer
Serious Sam Shatterverse vs Serious Sam 4 is not a sequel comparison. Shatterverse is a 2026 co-op roguelite FPS built by Behaviour Interactive Inc. and published by Devolver Digital, with a permadeath run loop, 1-5 player online co-op, and cross-platform multiplayer on Steam (AppID 2067210). Serious Sam 4 is a 2020 linear campaign built by Croteam. Earlier Croteam-era Serious Sam titles are not Shatterverse facts as of 2026-09-05.
Side-by-side: Serious Sam Shatterverse vs Serious Sam 4
Both share the Serious Sam franchise name and the Mental alien horde motif, but they are built by different studios, run on different release models, and target different players. The table below pulls every confirmed current-game fact from the Shatterverse Steam store page and the Serious Sam 4 Steam store page, both checked 2026-09-05. | Field | Serious Sam: Shatterverse | Serious Sam 4 | | --- | --- | --- | | Developer | Behaviour Interactive Inc. | Croteam | | Publisher | Devolver Digital | Devolver Digital | | Release model | Roguelite run-based FPS, permadeath loop | Linear single-player campaign | | Release date | August 31, 2026 | September 24, 2020 | | Genre tag | Co-op roguelite FPS | Linear FPS | | Structure | Shifting universes, run modifiers, boon stacking | Hand-crafted campaign levels | | Player count | 1-5 players (online co-op, cross-platform multiplayer, single-player) | Single-player with optional co-op | | Store | Steam AppID 2067210 | Steam AppID 257420 | Both are still published by Devolver Digital, so the publisher line is not enough to tell them apart. The load-bearing differences are the developer (Behaviour Interactive Inc. versus Croteam), the release model (run-based roguelite versus linear campaign), and the player count (1-5 player co-op roguelite versus single-player campaign).
Why Shatterverse is not a Serious Sam 4 sequel
The "Serious Sam Shatterverse vs Serious Sam 4" question usually comes from a player who saw Shatterverse in a Steam recommendation and wants to know whether it continues the Serious Sam 4 storyline. The answer is no. Three facts on the Shatterverse store page confirm a roguelite spinoff: 1. Behaviour Interactive Inc. is credited as developer, not Croteam. Croteam built Serious Sam 4 and is the original Serious Sam franchise creator, but the Shatterverse store page does not list Croteam in any role. 2. The official description frames Shatterverse as "a co-op roguelite FPS for 1 - 5 players. Blast through shifting universes, stack wild boons, bend the rules with run modifiers, and hunt Mental's deadliest forces. Fall fast. Come back louder." That is a permadeath run loop, not a numbered sequel. 3. The Steam feature list shows online co-op, cross-platform multiplayer, single-player, and peer-to-peer multiplayer for 1-5 players; Serious Sam 4 was a single-player campaign with optional co-op. The clean mental model is two parallel branches: the Croteam linear-campaign branch (The First Encounter through Serious Sam 4 and Siberian Mayhem) and the Behaviour Interactive Inc. roguelite spinoff branch (Shatterverse). Croteam is the shared franchise creator; Behaviour Interactive Inc. is the Shatterverse team.
How earlier Serious Sam titles fit the comparison
Eight other Serious Sam games still get pulled into the comparison, so it is worth naming them once and stating the boundary. None are Shatterverse facts. - Serious Sam: The First Encounter (2001, Croteam) - Serious Sam: Second Encounter (2002, Croteam) - Serious Sam HD: The First Encounter (Croteam remaster) - Serious Sam HD: The Second Encounter (Croteam remaster) - Serious Sam II (2005, Croteam) - Serious Sam 3: BFE (2011, Croteam) - Serious Sam 4 (2020, Croteam) - Serious Sam: Siberian Mayhem (2022, Croteam / Timelie Studio) All eight appear in the "IT'S TIME TO GET SERIOUS BUNDLE" on the Shatterverse Steam store page as bundle items only, not as development credits. The bundle lives on the [price and editions page](/price-editions/). Check the Serious Sam 4 Steam store page directly for a hard Serious Sam 4 fact.
What the comparison means for a new buyer
If you liked Serious Sam 4 for the hand-crafted campaign and Mental horde spectacle, Shatterverse keeps the horde and the FPS gunplay but trades linear level design for a run-based roguelite loop with boon stacking, run modifiers, and 1-5 player co-op. If you bounced off Serious Sam 4 for more replayability or a co-op-first structure, Shatterverse is built for that gap. A practical buying path: 1. Read the [release platforms page](/release/) to confirm the only confirmed store is Steam on Windows 10/11 x64 as of 2026-09-05. 2. Read the [price and editions page](/price-editions/) to choose between $19.99 USD standalone, the launch-week 10% discount to $17.99 USD ending around September 7, 2026, or the 7-item "IT'S TIME TO GET SERIOUS BUNDLE." 3. Pick the standalone purchase for the Shatterverse roguelite loop alone, or the bundle for the Croteam-era back catalog alongside Shatterverse. This page is a comparison, not a review. Every Shatterverse fact above is anchored to the Steam store AppID 2067210 page or the Devolver Digital press release dated 2026-08-31, and every Serious Sam 4 fact is anchored to its own Steam store page, both checked 2026-09-05.
Frequently Asked Questions
### Is Serious Sam Shatterverse a sequel to Serious Sam 4? No. Shatterverse is a 2026 co-op roguelite FPS developed by Behaviour Interactive Inc. and published by Devolver Digital. Serious Sam 4 is a 2020 linear campaign developed by Croteam. They share a publisher and the Mental alien horde motif, but the developer, release model, and player count differ. ### Who made Serious Sam Shatterverse? Behaviour Interactive Inc. is credited as developer on the Shatterverse Steam store page (AppID 2067210), with Devolver Digital as publisher. Croteam is the original Serious Sam franchise creator but holds no Shatterverse development role. ### Is Shatterverse like Serious Sam 4 in gameplay? Only on the surface. Both are first-person shooters built around the Mental alien horde, but Serious Sam 4 is a linear single-player campaign with optional co-op, while Shatterverse is a run-based roguelite with permadeath, boon stacking, run modifiers, and 1-5 player co-op. ### Should I buy Serious Sam 4 before playing Shatterverse? Not required. Shatterverse is a standalone roguelite title; the Croteam-era games are not prerequisites. The "IT'S TIME TO GET SERIOUS BUNDLE" on the Shatterverse Steam store page packages Shatterverse with all eight Croteam-era titles at a bundle discount, which is the simplest way to own both branches together.
Sources
- [Serious Sam: Shatterverse on Steam (AppID 2067210)](https://store.steampowered.com/app/2067210/Serious_Sam_Shatterverse/) - `official/store` - checked 2026-09-05 - Shatterverse developer (Behaviour Interactive Inc.), publisher (Devolver Digital), release date 2026-08-31, roguelite FPS description, 1-5 player online co-op, cross-platform multiplayer, single-player Steam features, bundle contents. - [Official Serious Sam franchise hub](https://www.serioussam.com/) - `official/store` - checked 2026-09-05 - cross-link to the Shatterverse Steam store entry and the publisher announcement; confirms Croteam's role as original Serious Sam franchise creator with no Shatterverse development credit. - [Serious Sam 4 on Steam (AppID 257420)](https://store.steampowered.com/app/257420/Serious_Sam_4/) - `official/store` - checked 2026-09-05 - Serious Sam 4 developer (Croteam), publisher (Devolver Digital), release date 2020-09-24, linear single-player campaign structure. - [Devolver Digital press release dated 2026-08-31](https://www.devolverdigital.com/) - `media/interview` - checked 2026-09-05 - launch announcement and publisher attribution for Serious Sam: Shatterverse, Behaviour Interactive Inc. as developer.
Internal Link Requirements
- `homepage` -> `/` - entry point that summarizes Shatterverse as the 2026 co-op roguelite FPS by Behaviour Interactive Inc. - `Release platforms` -> `/release/` - confirms Steam AppID 2067210 on Windows 10/11 x64 and the August 31, 2026 launch date. - `Price and editions` -> `/price-editions/` - $19.99 USD standalone price, launch-week discount to $17.99 USD, and the bundle contents.
Fact Boundaries
- Confirmed: Serious Sam: Shatterverse launched August 31, 2026 on Steam as AppID 2067210, developed by Behaviour Interactive Inc., published by Devolver Digital, with 1-5 player online co-op, cross-platform multiplayer, single-player, Steam Cloud, Family Sharing, and 20 Steam Achievements. Serious Sam 4 is a 2020 Croteam linear campaign published by Devolver Digital. Both stores were checked 2026-09-05. - Legacy context only: Serious Sam: The First Encounter, Second Encounter, the HD remasters, Serious Sam II, Serious Sam 3: BFE, Serious Sam 4, and Serious Sam: Siberian Mayhem (Croteam / Timelie Studio) appear here only for disambiguation and as items in the IT'S TIME TO GET SERIOUS BUNDLE. None are reused as Shatterverse facts. - Unannounced as of 2026-09-05: per-Sam variant ability rosters, individual Mental lieutenant names, full weapon and trinket lists, post-launch roadmap items, exact console launch dates, PS5 / Xbox Series X|S / Switch 2 availability beyond the Steam "Cross-Platform Multiplayer" feature flag, Steam Deck verification label, and Mac / Linux availability are not announced as Shatterverse launch facts. - Source basis: every confirmed Shatterverse fact points to the Steam store AppID 2067210 page, the official serioussam.com hub, or the Devolver Digital press release dated 2026-08-31; every Serious Sam 4 fact points to its Steam store page.