Deathless. The Hero Quest
In Deathless, elements of a collectible card game, roguelike, and turn-based strategy combine seamlessly. Build a unique deck of cards, discover unusual relics, and defeat legendary bosses. No two journeys will ever be the same with endless Path. Crush the Evil and save the world!
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Theseus Protocol on Steam
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Theseus Protocol is a deck building roguelike where rebirth offers strategic opportunity. Utilize a powerful suite of cards and weaponry to uncover the cruel truth behind the dystopian sci-fi world of Mark City.
Theseus Protocol is a roguelike deckbuilder, card game and card battler game
developed by YueTang(Xiamen)
and published by Archive Games.
Released on August 22nd 2023 is available only on Windows.
It has received 370 reviews of which 258 were positive and 112 were negative resulting in a rating of 6.6 out of 10. 😐
The game is currently priced at 9.75€ on Steam.
The Steam community has classified Theseus Protocol into these genres:
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System requirements
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Windows
- Requires a 64-bit processor and operating system
- OS: Windows 10(64bit)
- Processor: Dual Core 2 GHz(64bit)
- Memory: 4 GB RAM
- Graphics: Intel HD 4600(AMD or NVIDIA equivalent)
- DirectX: Version 11
- Storage: 4 GB available space
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User reviews & Ratings
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It's true that there isn't a whole lot to the game yet, though I'll say that for $10, it's very fun, well-made, and so far both Charlotte and Antiope are very different and very fun to play in their own ways. I love both, in terms of both gameplay and design. The story is poorly-translated, so that's definitely something that needs work, and the cutscenes make no sense. I'm giving this a positive review because I think that everything the game does have is far more important than what it lacks. I love this game, and I highly recommend it. It's fantastic for what you pay for it, and you'll get a lot more fun for your money than many other titles.
TL;DR Aside from few UI and translation bits that aren't polished, Theseus Protocol is a decent roguelike deck building game. After completing a run with the 1st character, you'll get past the unfriendly UI and find a nice casual fun. Pros: Visuals are good, nice artworks. Though confusing at first, seeing a lot of buff and debuffs being stacked has its appeal. Consuming cards instead of using them is a nice mechanic unique to this game. Has x3 speed for nice speedy runs. You can resume from the start of the turn anytime, though this kinda allows rerolls/save scumming. Cons: A few bugs here and there where the turn won't finish, but exiting to title and resuming can mostly fix it. UI isn't the most friendly or intuitive, such as the tooltip not fully explaining mechanics and terminologies thoroughly. The damage counter doesn't seem to fully account for all buffs making you take unwanted damage if you're trying to be precise, which would be problematic but midway the defense/attack values should inflate enough to be negligible. Some translations to english is unclear, but nothing too bothering. The map path is visually linear, unlike other games of this genre, but only visually. Once you land on the spot you'll see the choices you can make, which I don't know why it's not visible ahead of time when it's mostly set events anyway. Anyways, I'm enjoying this game enough for the price. On a scale of Slay the Spire to Monster Train with the slow paced planning to fast paced wombo combo, then Theseus Protocol feels closer to Monster Train. The battle UI/layout is like Griftlands. The balance feels outta whack though, but they more or less exist in other games as well so it shouldn't be much of a problem. Theseus Protocol is a 7/10.
May 2023: The game has significantly approved and featured some overhauls. Many cards and equipment have been remade, the entire tree of weapon upgrades as overhauled as well. Runs are longer, giving you more time to build up and enjoy the power you've earned with a bigger pool of enemies and mechanics they will use against you that test your adaptability. I'm also very happy a 3rd character was added, that again plays extremely differently from the others. If you haven't played it yet or took a break, now is a great time to hop back in. My review from when the beta launched will remain below to contrast the differences. January 2023 : Really great game in my opinion. The 2 current characters play extremely differently and makes me excited for the third and what unique mechanics she may bring to the table. I've seen some complaints about not enough content, but it makes me question are we playing the same game? Even in early access I give this game a 10 out of 10 because what it has is done so well. There's a bit to be desired with some missing translation. My only real negative is the short story segments appear as walls of confusing text since they aren't translated too well. As the description states the plans for a narrative, I'm quite interested in seeing how that is later implemented. The fun of Theseus Protocol stems from hundreds of cards and equipment that let you dive into strategic deck builds to play however you wish. You start out with a small set of base cards and can earn up to 4 choices between 3 sets of cards for a total of 3 each time you win a battle. At Random, chances to heal or shop appear. The shop sells cards, items and equipment, but during my play time I focused more on purchasing equipment. Equipment is game changing, and can provide some serious buffs that may change how you play or compensate for a miscalculation. I felt I could actively find useful cards enough to not need to keep buying them, but I'd snag a few good looking ones if I had left over credits. I'd say that 80% of the cards are good enough that you can still win without a build. Those 20% of cards that are not great, are really bad. Some equipment makes similar ones completely inferior. I've seen a couple of cases where an equipment offers a really good buff with no down sides, but another offers the same buff and you have to go through hoops to obtain it. You might even be penalized. I'm perfectly fine with powerful equipment having penalties, but I'd prefer consistency. So many card choices are already difficult to pick between because their good which shows the quality game design, so I have full faith this will be ironed out. More choice means more variety, which also means more play time to try new stuff. Weapon upgrade tree was very interesting. It seems all of your consistent power was placed here, so it's very important to rush those upgrades early to make all your proceeding runs much smoother. I like how there are both always active passive upgrades and much stronger ones you can swap around that really change up the guns. My favorite combination so far has been to use Charlotte with a quick draw pistol. Burn 2 cards to fully charge it, and it refreshes every turn. Followed by turning the Sniper into an easy way to stack burn on everyone. I followed this up by doing shock builds, and they were extremely fun high risk high reward ways to shred enemy health and armor while bypassing shields. I'd often have to eat damage myself from the large sum of shock cards that shock yourself, but when you can get a good draw with attacks and tactical ones that buff you for being shocked. You're in for wiping the floor, I was getting as high as 60 shock a turn on enemies. I believe at the time of this posting my Charlotte is around level 6. Can't wait to try some different chip upgrade combinations and the 2 other weapon choices later. Overall, that's my thoughts and experience. Keep up the great work developers.
Theseus Protocol Early Access The Game This is probably one of the better deck builder that has a very cool anime/cyberpunk artstyle that i've played. I've play some others like Slay the Spire and think this one i different enough while not borrowing so much of the main formula. It's simple enough once you started playing around. The Story They seems to want to tell a story and i'm all for it. I want to know about this cruel truth behind the dystopian sci-fi world of Mark City and how it affect the playable characters or even why they matter in this city filled with creatures and peoples with tech. I don't know but i like this turn based card game battle system and how it help to advance the story in some ways. Gameplay The Theseus Protocol in its current form i found it very enjoyable. It's anime, cyberpunk and a card game deck builder. Love it. It plays like other card battler games but i think here it's being different and creative enough to set itself apart from the rest with the unique weapons each character has which can be used during combat by using the cards you fight with. Its got some great animation during combat and presentation is pretty good. I want more characters. I was going to pick the one with the sword but it's unavailable. Welp. Card Game So it plays like other card battler except here each characters have its own unique weapon and hey required to be charged using cards and once they are used and go into a cooldown. I found that to be a cool change and seem balance on the cooldown. I only played the girl with the hand gun and sniper so i had two weapons. Her name is Charlotte. I think the characters also have some abilities of their own that's passive. Could be wrong on that. It's a cool mechanics and i'm unsure but i was sure they could also be upgraded but i could be wrong. But if they could that would be cool. Unsure how that would affect the rest of the game as you progress but will see. The kinds of effect you can get to me seemed balanced enough and not so ridiculously powerful (i'm sure there's some combo i'm not aware of) but i don't mind a few of them since you're most likely going to face much powerful opponent or be outnumbered most times. I actually managed to beat several bosses in 1 run lost to this girl that looks like a Corpo for Cyberpunk 2077 with a few bodyguards. Was fun and had a good challenge to it. But in comparison in Theseus Protocol i can actually clear a lot of bosses with varying difficulty based n but and debuff i end up having to deal with. Performance Ran great. I think i will mostly just play it at 60 fps. It doesn't appear to be the sort of game that requires more juice to run well. This game would be great on Nintendo Switch. Visual Unsurprisingly it's really good. Not sure if they plan to change the card artwork down the line but for now it's good. I may have said it already but its got a great presentation during and after combat and even in the menu. Soundtracks The current looping bgm is fine. I think the game could use several more during the usual combat and some boss fights. I'm thinking of stuff like this. Just throwing ideas. https://www.youtube.com/watch?v=6VcqE4HT42c&t=64s https://www.youtube.com/watch?v=zdv7LItpH8w https://www.youtube.com/watch?v=rZvw7__yBvQ&list=PLdo5TiaudcWr1N-fkHIUlK7wTnQ41YBsa&index=8 https://www.youtube.com/watch?v=ZaAKX1RHu2c https://www.youtube.com/watch?v=jjyTzL6sxdQ https://www.youtube.com/watch?v=dgCnYsDTiXU https://www.youtube.com/watch?v=0Nys91Pd8Ck&list=PL8UbYpPIoqN1MPqIMmS0VAPY63ZAZdsOB&index=17 Overall Enjoyed it so far and with more updates it's going to get even better. I think we have something here over this existing foundation that card battlers all have. I think it's unique enough on its own that you should give it a spin. But of course this is still in early access and there's more i haven't even talked about like the “Chip Development” system currently. But this game can get much deeper with its mechanics and systems. The potential is really high on this one with more updates and community feedback. I'll update it the more i play and the more it's updated. Specs Cpu - i7 13700K Stock Gpu - Asus ROG Strix RTX 4080 Stock Ram - 32GB 6000Mhz DDR5 Xmp enabled Monitor - Asus XG27AQ ROG Strix 2560 x 1440p 170hz https://www.twitch.tv/blakgamer64
If you like games like Slay the Spire and Monster Train, you will probably enjoy Theseus Protocol. It's different, but it's by no means going to start a revolution in the genre, nor is it going to be genre defining like Slay the Spire was. It's cheap, it's fun, and it's sadly too short. Hopefully this will be fleshed out in the future, as I can see this becoming incredibly good fun when it's polished more. Better translations also would not hurt.
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Frequently Asked Questions
Theseus Protocol is currently priced at 9.75€ on Steam.
No, Theseus Protocol is currently not on sale. You can purchase it for 9.75€ on Steam.
Yes, Theseus Protocol received 258 positive votes out of a total of 370 achieving a rating of 6.64.
😐
Theseus Protocol was developed by YueTang(Xiamen) and published by Archive Games.
Yes, Theseus Protocol is playable and fully supported on Windows.
No, Theseus Protocol is not playable on MacOS.
No, Theseus Protocol is not playable on Linux.
This information about Theseus Protocol is not available yet.
This information about Theseus Protocol is not available yet.
No, Theseus Protocol does not support VR.
Theseus Protocol is a single-player game.
No, Theseus Protocol does not currently offer any DLC.
No, Theseus Protocol does not support mods via Steam Workshop.
No, Theseus Protocol does not support Steam Remote Play.
Yes, Theseus Protocol is enabled for Steam Family Sharing. This means you can share the game with authorized users from your Steam Library, allowing them to play it on their own accounts. For more details on how the feature works, you can read the original Steam Family Sharing announcement or visit the Steam Family Sharing user guide and FAQ page.
You can find solutions or submit a support ticket by visiting the Steam Support page for Theseus Protocol.
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Additionally, we incorporate data from the SteamSpy API, which offers insights into game sales and player statistics. This helps us present a comprehensive view of each game's popularity and performance within the gaming community.
Last Updates| Steam data | 24 September 2026 14:24 UTC |
|---|---|
| SteamSpy data | 15 October 2026 16:39 UTC |
| Steam price | 26 October 2026 19:38 UTC |
| Steam reviews | 19 October 2026 15:59 UTC |
If you'd like to dive deeper into the details about Theseus Protocol, we invite you to check out a few dedicated websites that offer extensive information and insights. These platforms provide valuable data, analysis, and user-generated reports to enhance your understanding of the game and its performance.
- SteamDB - A comprehensive database of everything on Steam about Theseus Protocol
- SteamCharts - Analysis of Theseus Protocol concurrent players on Steam
- ProtonDB - Crowdsourced reports on Linux and Steam Deck Theseus Protocol compatibility
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Developer
YueTang(Xiamen)
Publisher
Archive Games
Release
22 Aug 2023
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