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All New Major Features In Hero Siege Season 10 Ebontharn

Updated on Aug 19, 2026
Aug 19, 2026

Overview

Hero Siege's 10th season named "Ebontharn" is releasing on August 21st, and we've just received an update on all new major features you can expect to see in the game. In this article we'll be going over what they are so you have a better idea of what you'll be jumping into this Friday!

New Campaign Act: Ebontharn

The campaign in Hero Siege will officially be getting expanded in Season 10 with a brand new act titled 'Ebontharn', which seemingly continues on from where Act 8 leaves off. After the heroes successfully stopped the threat of Odin, it seems a new dark cult now seeks to bring back the evil previously kept at bay.

Not only is the new Act completely free, with the new season release, the developers have also made Act 8 free for all players, which was previously a paid DLC. This isn't all that is being made free though, as Marauder, Plague Doctor, Shield Lancer and Jotunn are all also being made free. Players who already own the DLC will now receive a premium skin for said classes.

Other miscellaneous changes have been made to act progression, including new side zones throughout acts, in order to extend progression in the game. Not only this, but the developers say they have greatly expedited the campaign to endgame journey. After finishing the game on Normal, you will now retain all of your waypoints in Nightmare, which now effectively serves as Hell 1, of which is now taking on the role of what previously would've been Hell 4.5

Lastly, this new season will also bring with it three new Uber Bosses: Phantom Leviathan, Captain Grimtide, and the Blood Maiden.

It's currently unknown how these bosses will be summoned, but as soon as we find out you'll be able to read those guides here on the site!

New Seasonal Mechanic

Every new season in Hero Siege typically brings with it a brand new seasonal mechanic. Unlike other ARPGs, these mechanics don't go away when the season ends, and instead become permanent mechanics in the game.

In Season 10, the mechanic is called the Abyssal Chest.

When found in the map, the abyssal chest will create up to five interactable levers in the surrounding area, which can be pulled to spawn high rarity, and potentially deadly mobs. The Abyssal chest can be opened after pulling at least one of the levers, and once interacted with will spawn a final encounter of mobs that scale based on how many levers were pulled.

After the final encounter, the chest can then be opened, and the rewards that spawn will be increased based on how many levers you successfully pulled.

Other Notable Changes

Along with the changes mentioned above, the dev team has also made some large changes and improvements to key parts of the game. Those changes can be found listed below.

  • There are now 24 New unique items to obtain
  • Over 100 new nodes have been added in to the Ether tree.
  • Over 600 new nodes have been added to the Incarnation tree.
  • Monster AI has been reworked, and should result in a performance increase. The new AI is significantly more aggressive, and does not get stuck.
  • Data handling back-end code with skills and collisions with monsters has been rewritten, which results in massively increased combat FPS.
  • Zone generation has been optimized and is now significantly faster
  • New paid Tarot Card Inventory tab, each slot holds one of each Tarot Card, and duplicate cards automatically stack.
  • Odyssey Buffs now translate to offline. Additionally, Odyssey now gains 40% more ore from mining, and Gold Find no longer has diminishing returns for Odyssey
  • Tarethiel Market filter has received a re-work!

There are of course more changes in the season being made, all of which you can read on the official patch notes spread sheet. If you're interested in that, you can find it here

Conclusion

Season 10 of Hero Siege is shaping up to be just as, if not greater than the previous seasons. We're planning on covering it here on Mobalytics, so if you're interested and want to read more on the game, expect full guides and more when the season drops on the 21st!

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