December 2025 was a great month for Steam users, with several games offered as freebies. Titles like Undercroft Warriors, Caveman World: Mountains of Unga Boonga, Rat Quest, and The Deed: Dynasty were available to keep for free, but those promotions have now ended. While we wait for more giveaways in 2026, Steam still has a large and growing selection of free-to-play games, including Skybound, to keep players entertained.
The Persona series has been very active lately, even though fans are still eagerly awaiting Persona 6. While we haven’t heard anything new about Persona 6, there’s been plenty to enjoy, including a remake of Persona 3, multiple spin-offs based on Persona 5 like Persona 5: The Phantom X for mobile and PC, and plans for a remake of Persona 4.
Originally a web novel by South Korean author Chugong, Solo Leveling has grown into a popular series with both a manhwa and an ongoing anime adaptation. While incredibly successful, its popularity is largely driven by fans outside of Japan. The series hasn’t gained much traction there, likely due to issues with how Japanese characters and culture were portrayed by the author.
The original Dungeons & Dragons game came out in 1974, published by a company called Tactical Studies Rules, which later became known as TSR. TSR was started by Gary Gygax and created not only the first version of the game, but also Advanced Dungeons & Dragons. They oversaw the development of this popular tabletop roleplaying game until 1997, when Wizards of the Coast bought the company.
![The bi-scalar fishnet theory, when examined across coupling strengths for operators with [latex]J=3[/latex], [latex]M=0[/latex], and [latex]S=0[/latex], reveals colliding energy states and the emergence of complex energy levels-a consequence of pushing the system beyond predictable behavior.](https://arxiv.org/html/2512.22996v1/x1.png)
Researchers have developed a powerful new method for calculating the spectra of operators in two-dimensional fishnet conformal field theory, offering insights into its underlying integrability.
The popular series One Piece is now in its final story arc, and fans are anticipating some epic battles. This means the Straw Hat Pirates need to be prepared for even bigger challenges than before. Currently, several crew members, including Luffy, Zoro, and Sanji, are already powerful enough to handle significant threats.
The updated version of Stardew Valley launched on December 25th for the Switch 2, offering improvements on Nintendo’s latest console. It now supports up to four players locally on one screen and eight players online. A new feature called GameShare lets players try the game even if they don’t own it. The Switch 2 version also fully supports mouse controls using the Joy-Con 2. Recent updates are now available to fix bugs and further refine a new feature within the game.
No matter how you feel about European history, you’ll likely enjoy Chivalry 2, and you can even try it for free until tomorrow!
Over the years, the world of Naruto has witnessed many powerful ninja come and go. It’s a pattern throughout the series: each new generation of ninja tends to be stronger than the last. Naruto Uzumaki’s generation was the strongest yet, with Naruto himself considered the most powerful of them all. At his peak, Naruto was nearly invincible, with only a few characters like Shibai Otsutsuki able to challenge him.
![A precisely timed sequence of dynamic controls enables the realization of a [latex]\sqrt{\mathrm{SWAP}}[/latex] gate, manipulating the two-particle probability distribution-visualized across a 3µm spatial range-over a gate duration of 21.2µs.](https://arxiv.org/html/2512.22569v1/x8.png)
Researchers have demonstrated a fast and high-fidelity quantum gate based on dynamically controlled optical superlattices for processing fermionic quantum information.