Co-Op Steam Game with Castle Crashers Vibes Finally Launches and Hits a Major Milestone

An indie game called Lost Castle 2, which has been in early access on Steam since 2024, has finally launched and already reached an impressive milestone on Valve’s storefront. Developed by Hunter Studio, Lost Castle 2 is often compared to Castle Crashers, the 2008 beat ’em up that’s one of the genre staples.

Castle Crashers currently holds an Overwhelmingly Positive average review score on Steam, with nearly 140,000 reviews. Developed by The Behemoth, it has long been considered one of the most influential games of the beat ’em up genre and still maintains a dedicated fanbase today. While many games have tried to follow in its footsteps over the years, Lost Castle 2 may be one of the few that has managed to capture some of Castle Crashers‘ best gameplay elements, and the latest stats seem to support that.

Best Co-Op Games On Steam To Play Right Now

From online multiplayer titles to local masterpieces, Steam has plenty of fantastic co-op games that should be played in 2026.

Lost Castle 2 Reaches Over 20,000 Concurrent Players on Steam

The 1.0 version of Lost Castle 2 was released on June 10, 2026, nearly two years after its early access debut. According to SteamDB data, the game quickly saw a surge in concurrent players, with the latest record as of this writing at 21,326, which is its highest peak to date. The spike also appears to be boosted by a limited-time Steam discount, which lowers the price from $17.99 to $12.59 USD until June 24. Celebrating the full release, developer Hunter Studio said, “We’re thrilled to finally share the complete Lost Castle 2 experience with you,” while also revealing a range of new content included in the free 1.0 update.

Everything New in Lost Castle 2

(NEW) Weapon enhancement features
(NEW) Soul Stones (ability-enhancement items)
(NEW) Upgraded quest system for the storyline
(NEW) Collectible items
(NEW) Weapons and pieces of armor
(NEW) Boss-unlocked weaponry and gear
(NEW) Higher difficulty levels for Lost Castle 2’s Nightmare mode
(NEW) End-game hidden boss fight

Why Lost Castle 2 Is a Perfect Pick for Castle Crashers Fans

The 2D overworld map and castle battlegrounds in Lost Castle 2 may trigger some nostalgia for fans of Castle Crashers. More importantly, its 4-player co-op combat turns every fight into chaotic, fast-paced action, which could be the main hook that draws Castle Crashers fans in.

Lost Castle 2 supports both local and online multiplayer.

Lost Castle 2‘s fundamental gameplay loop is built around classic roguelike design, but it also appears to borrow from Castle Crashers in its beat ’em up-style combat. Like Castle Crashers, it leans into a medieval setting paired with quirky character designs that give it a lighthearted tone.

Build your perfect top ten one reveal at a time.

What Lost Castle 2 has that Castle Crashers lacked, however, is a deeper character build system that lets players customize their stats through a wide range of options. These include Lost Castle 2‘s weapon enchantments and permanent buffs, as well as mid-match drops, armor, and loot that can significantly shape each playthrough. Thanks to its roguelike design philosophy, every run in Lost Castle 2 can feel completely different, making it one of the more replayable entries in the genre.

On Steam, Lost Castle 2‘s all-time rating sits at Mostly Positive, based on over 11,000 reviews. That said, recent reviews from some non-English regions have shifted toward Mixed, largely due to reported performance issues following the 1.0 update. Even so, developer Hunter Studio has a solid track record of rolling out frequent hotfixes throughout early access, suggesting these issues are likely to be addressed soon in an upcoming patch.