Quantum Love Theory
This game is still in an early development stage.
Public version 0.1.9 is ready to play!
The game is free to download, but you can send me a tip or join the Patreon if you'd like to contribute more to its development.
Bugs and typos here! ꟾ Patreon
Summary:
Sigmund and a team of physicists are working on an interdimensional connection device. One day, he decides to test the machine by himself, but things go wrong due to its experimental nature.
He wakes up in a parallel universe where everyone he knows lived a different life and now has new personalities and relationships. To find his way back, he’ll need the help of these familiar strangers.
Also featured on PlayFurryGames 💖!
Characters:
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Development log
- Build 0.1.10 public release live! (Eng/Esp)34 days ago
- Build 0.1.9 public release live! (Eng/Esp)78 days ago
- Typo fix update!Mar 09, 2026
- Build 0.1.8 public release live! (Eng/Esp)Feb 28, 2026
- Build 0.1.7 public release live! (Eng/Esp)Jan 15, 2026
- Versión en españolDec 19, 2025
- Subscribestar relaunch + new patreon benefits!Dec 13, 2025
- Build 0.1.6 public release is live!Dec 01, 2025
Comments
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Honestly, this is the absolute best visual novel I’ve ever experienced! The characters are incredibly lovable, and the story kept me hooked the entire time without a single dull moment. I can confidently say this is now my all-time favorite visual novel. Huge, heartfelt thanks to the creator for such an amazing piece of work!!! I seriously can’t wait for what comes next!
I just finished the new upd can't wait to see Albert bottom 😆
Omg I feel so bad for the first world Dom :'( But the other Sigmund is so intersting.I can't wait to see more of him. And I can see clearly why he and duncan are so close haha
could you make a route about what has happened after the other sigmund got teleported?
im curious about a lot of things here,why is he tied up? also i notices that he seems to have the same eye as the paraller duncan..
and new route will be available right?
i mean.. when we play the 'fuck, marry, kill' at the bar
But i didnt expect they would have a 3some (maybe bcuz it was too sudden)
fortunately,this update is great, itscute that you animate the dancing lol😹
cant wait for the next update!
Thank you! They have him tied up because he refused to talk and they didn't know if he could be dangerous or not :3.
if you make a route in a parallel but it would be great if it start on the day Sigmund got replace with the parallel Sigmund
Let me guess you're going to finish Dominic before you move on to Albert or the other cast members just wondering
I plan to start one more route in parallel soon :3
Just a quick question does the VN have routes for the different characters or no?
It has only one route for now (Dominik route) but we will add more routes in the future :)
Update 🫠🫠🫠🫠
Coming up May 30th :3!
It's the 31st day already 😭
Sorry x3 It's coming out today in a few hours :3!
It's up! :3
可以添加个中文吗？
目前我们尚未提供中文的官方支持，但我们会将其纳入未来的发展计划。
I don't know where this idea came from, but it's the best thing I've read so far :'v It's definitely very good, with an interesting story and excellent character development. I'll wait patiently <3
Good luck to the developers of this wonderful project that's in Spanish :3
Thank you very much! :3 💖
SPOILERS!
I wanted to offer some constructive feedback.
I really like the game and its characters. But I believe there's a problem with how the development and time we spend with the characters is distributed. I understand that Dominik is currently the only route available, but even so, we spend time with the other characters; some days are just for getting to know them and spending time with them, and that is very nice. But when are we going to talk about Bob? He's the only one so far who hasn't been developed and we haven't spent much time with him, even though he's one of the main characters, he barely appears, his presence is lacking. Magnus, Dominik, Albert, they all had their respective moments, and in this update (1.9), he had even less lines than secondary characters like Ernest or Bernard, he really seems to be left out compared to the rest of the group.
I think that's it, I really like the game, but I think that's one of the problems that bothers me. I really want the game to improve and continue to be as it is ^-^
Hello! Thank you for your feedback :3 Dr. Kriston will have more screentime in next updates. 💖
I need a new update now😭😭😭😭
It's up now! :3
I wish could add a traditional Chinese.
I like it a lot but it's a shame that there is no French language
Me encanta como se desarrolla la historia está increíble el personaje que más espero como opción romántica es Dominik ^^
Sí, es el primero que se desarrollará :3
I wish we could see the story from the perspective of both worlds.I miss the first world characters :'(. And it would bring some good drama for us to see from the personality of the second sigmund.
yessss ive been waiting on more duncan
also i hope that duncan is a romance option in the future after dominik i've loved him since day 1
Is this game linear or non-linear? Like, are there multiple endings? Can I pick which guy Sigmund ends up with?
Hello! It is linear for now with a few options; there will be multiple routes and endings in the future, but I'm working on one (Dominik) first. :)
Ah interesting. Thanks for letting me know!
recently started this vn, currently just finished day 2, I got a few notes
the way things played out after Sigmund goes to the parallel universe doesn't sit right with me
after Sigmund finds Bob and Alby, everything goes way too fast
and i general, everyone seems way too blase about the whole situation
like, this warrants a "Holy Shit," but everyone is giving "how mildly peculiar"
like, it doesn't feel like Sigmund actually processed the fact that he is in a reality and all the implications and how much of a big deal it all is
like there should have a moment while he was talking with Bob 2, where the weight of the situation hit him
also it doesn't seem like the others care that their Sigmund is presumably in another world and has been replaced with a complete stranger wearing his face
like I get it that these versions of Dom and Bob are more laid-back than those from Universe 1, but still they seemed way too calm about this whole situation
Hello! Thank you for your feedback! I understand they don't look too freaked out, but they have reasons to keep calm (at least for now). They are also hyped because their machine finally got to work, so they consider it a huge step forward.
OMG! Everyone's fat!! I gotta play this ^^
Bob is soooo cute i love him so much, can't wait to have the option to date him!
you should change the languages in more information to english and spanish so more people get it in their alogrythm
I will now, thank you! :3
Really hoping to get an option to date Magnus Lol
I agree with the below comment, Ernest is my new fav >:)
please let me date ernest i need him so bad
The game is great and I love the art style and I hope there is more "intimate scenes" in the next update ;)
Hewo! (∩´∀`∩)💕the update is cute! I like where this is going and its super interesting to read and its worth the wait for the update iltsm!!
Muy bueno, espero siga actualizando para seguir jugando
Honestly ive played a couple of very good vn's but this has so much potential. Love everything so far. And a +++ that every character is chubby as im into chubs ^^.
I really hope updates happen often, looking forward to it.
Keep up the good work. :)
Much love.
Hello i was wondering if there was a discord
Hello! No but there is a telegram channel and bluesky :3
Thanks <3<3<3<3<3
Hello, i love the new update its cute and romantic and i love how you can now switch to sfw! Im glad they added it but mostly a lot of things changed and i love it and the art style and the characters (*´˘`*)♡
I have to know you have done a very amazing job in this new update You have changed a lot of things for the better I liked the new writing method I liked the best characters I am really looking forward to the next month update I will wait impatiently
Feed us! I really love this vn i want to know when is the update?!
Hello! Next update coming on July 12th ;3.
OMG it's today ❤️💕
It's up! :3
Thanks for the update 🥰
Daaamn, I thought your comics are great but this is even better.
Good vn so far, I like it and all the big men. 💕
Could you add a 'hide UI' button on android?
Thank you! I will research on how to do that :)
I love this vn the story is amazing!! I love the art style and the characters its beautiful and cute, and im excited for more i really enjoyed the demo! 💖 hoping for update soon! Btw i thought it was sfw T-T i really got flashed 🫣
Thank you! Sorry about the nsfw part 😅. I've added an in-game warning and an SFW switch to the next build.
I like it
oh the art style for the characters is really appealing! i love that they're all fat hehe. The premise too is so intriguing I love personality shifts
tried this not too long ago, i really like the premise and characters. though i feel like things go a bit too fast. For example we only get a snippet of the prime world variants of the cast before going into world b along with mc sort of coming to terms with his situation very fast(for now) over all i enjoyed what was presented. Magnus also makes me go AWOOGA!
Hello! I'm happy you are enjoying the game so far! Also, thank you for your feedback :3 I've been hearing about the pacing issues and I've decided to rework the first half to expand the narrative.