Critical response
The first six out of twelve episodes of the first season were given to critics to review ahead of the series premiere. The first season of The Legend of Vox Machina received a generally positive response from critics. On the review aggregator website Rotten Tomatoes, 100% of 38 critics' reviews are positive, with an average rating of 8.60/10. The website's consensus reads: "Fluidly animated and intelligently scripted, The Legend of Vox Machina is an addictive treat for fans of Dungeons & Dragons-style RPGs". Multiple reviews highlighted the challenges in adapting the lengthy source material and that the show has some pacing issues, however, once it reaches the Briarwood arc the show takes off. According to market research company Parrot Analytics, the first season was the most in-demand animated streaming television show in the first-quarter of 2022, and that the show had "17.9 times the average demand of all other U.S. series".
In comparing the first season to the original D&D campaign, Glen Weldon of NPR stated that The Legend of Vox Machina captures the essence of the "chaos energy" from the original actual play web series, distilling it into a more concise narrative – "storylines that stretched over hours and hours on the web series play out, here, over the course of one or two half-hour episodes". Weldon commented that "the animated series can't be everything the web series is, but then, it's aiming for a wider audience. And at that respect at least, its certainly got everything it needs to hit its target". Kevin Johnson, for The A.V. Club, commented on the quality of the animation and the show's adult themes, noting that while it includes "plenty of curse words, sexual innuendo, and brutal violence—nothing feels overwhelmingly crass or unnecessarily gratuitous" and when escalation occurs, "it matters". He particularly praised the fourth episode for its character development, tension, and striking visuals. Johnson opined that show is "good stuff, and perhaps most importantly, Vox Machina knows to let its moments–dramatic, comedic, or action-oriented–breathe for themselves". Kenneth Lowe, for Paste, wrote that "if you wanted a show about D&D with the serial numbers filed off, it's got you covered", however, it is not a kids show like the 1983 Dungeons & Dragons television series; instead, it has a similar level of graphic violence as Amazon's Invincible. He commented that "while there isn't a whole lot of diversity in the principal Critical Role cast, the show comes down on the side of a kind of casual inclusivity" and that it deliberately avoids "the racial essentialism which forms more of the bedrock of tabletop roleplaying gaming than many like to admit". Lowe opined that "The Legend of Vox Machina is a competently produced story decidedly informed by the sensibilities of a new generation of players".
Eric Francisco, for Inverse, compared the show to Avatar: The Last Airbender and Voltron in the way it conveys ideas and simplifies complex lore. Francisco commented that while Tal'Dorei as a setting might lack originality, the story has "gravitas" and highlighted Percy's arc, a gunslinger grappling with revenge, in particular as "astonishing to witness". However, he felt that the show's frequent shifts in tone blurred the "comedy and parody" line "too often". Francisco stated that The Legend of Vox Machina is "an accessible" action fantasy "despite its sourcing from a long-running Twitch show" and is "only unusual in its marriage of Tolkien-lite settings and the lurid humor of a Deadpool comic book". Cass Marshall, for Polygon, described the show as "a deeply indulgent story", "weirdly wholesome", and at times "frankly a little much"; she also thought that the animation work carried "the plot quite well, albeit not perfectly". She expressed her love for the show, noting that "Critical Role's heart and good intentions" helped overcome The Legend of Vox Machina's "initial problems" and when the major story arc began, Marshall "was fully invested". Marshall opined "this is D&D pulp at its best" and emphasized that viewers "don't need to delve into" Critical Role's "rich canon" to enjoy the series.
Rotten Tomatoes reported that 100% of critics gave the second season a positive review with an average rating of 8.20/10, based on 20 reviews. The website's consensus reads, "double the dosage of dragons along with swashbuckling antics, The Legend of Vox Machina's sophomore season goes from strength to strength as a richly imagined adventure tale". Shannon O'Connor, for The Daily Beast, stated that "the first season of Vox Machina was an absolute blast, but Season 2 expands on it in the best possible way". O'Connor highlighted the voice cast who add "so much depth, creativity and fun to these characters". O'Connor commented that the show plays with audience expectations around fantasy tropes and that the show is not only a good adaptation but also an "uproarious, heartening, thrilling animated series in its own right". Anna Govert, for Paste, stated that the 12 episode second season is a "masterclass of adaptation" as it is based on "over 80 hours of tabletop gameplay" – the series is "unafraid of making changes and knowing the importance of character-first storytelling". Govert commented that The Legend of Vox Machina's "commitment to telling [...] meaningful stories alongside its badass fight sequences and crude humor make it feel refreshing and unique still in its second outing". She called the second season "a visual delight" with "an even clearer anime influence and a style that feels uniquely Vox Machina". Petrana Radulovic, for Polygon, commented that the "Dungeons & Dragons roots" are felt more in the second season as the characters go on a quest to acquire different objects. Radulovic highlighted that the show "might not fully gel for everyone" due to its expansive cast, huge amount of lore and raunchy comedic moments, however, "there is so much heart and fun in the grandiose adventure" which makes it special "for those it does click for". She also stated that animation is a better visual medium for fantasy – "Keyleth's elemental magic, Pike's glowing healing powers, and Scanlan's bright pink and purple bardic conjurations are really a testament to why we should see more of these shows in animation". James Grebey, for Vulture, wrote that splitting the party can be difficult in a role-playing game, however, by doing this in the adaptation "it has the benefit of being scripted and better suited to telling concurrent, coherent storylines than a harried DM" and it leads to "a trio of episodes that feel especially coherent and effective". Grebey commented that Grog and Scanlan can be "a lot, especially when their antics feel degrees sillier than whatever sad emo boy thing Vax or Percy are doing. I don't mean to keep harping on this, but the improvised, actual-play format of Critical Role supports these jarring moments of comedy better than the TV show [...]. But, when the two are on their own [...] it makes for a very effective story. It's all a little sillier but in a tonally consistent way, and being on their own forces the comic relief characters to step up and mature a little bit while still having the ability to pull off a pretty great suppository joke".
Rotten Tomatoes reported that 100% of critics gave the third season a positive review with an average rating of 8.70/10, based on 12 reviews. The website's consensus reads, "Deepening the character depth as well as the stakes, The Legend of Vox Machina's third season solidifies it as a Dungeon Master amongst its animation contemporaries." Anna Govert, reviewing the 12 episode third season for Paste, called it a "much more perilous" season which "sacrifices a majority of its crude humor in favor of heavier plot threads and character arcs" and while it "takes some liberties" as an adaptation, these changes help "the story in the transition to television". Govert highlighted that the third season often pairs characters up in comparison to the "sometimes solitary journeys" characters took before and by having "meaningful moments between the chaos of the season's ticking clock", the show "understands better than most of its peers that the overarching plots and life-threatening dangers are only compelling and terrifying if we care about the people throwing themselves head-first into the fire". Aayush Sharma of GameRant also highlighted the escalating stakes and character work in the third season. Sharma viewed "betrayal and its consequences" as the central theme for the season where "characters who betray others must grapple with the ramifications of their actions, including loss of friendships, personal guilt, and external conflicts". He thought the season balanced the darker narrative aspects with humor, "heartfelt storylines", and romantic relationships and that The Legend of Vox Machina makes "viewers care deeply about the characters' fates". Rafael Motamayor of IGN saw "vengeance and love" as the main themes of the third season with death feeling "significant, poignant, utterly catastrophic, and, most importantly, costly". On the first half of the season, Motamayor thought the writers struggled "to wrangle their many ongoing storylines" while balancing "what happened on the livestreams and the changes made by the animated series" which left it "feeling too contrived and convenient at points". However, Motamayor felt the second half was "exciting" and went "beyond" the original campaign it adapted; he also highlighted the "stunning" animation work, with standout character work and the best fight scenes of the show so far. Harvey Randall of PC Gamer praised the unexpected character deaths as "these changes ensure that long-time fans like me aren't just sat here crossing off entries on a bingo card". Randall commented that the creators "have made a statement that no-one is exactly safe" and "while Percy's death seemed like a brave, interesting departure from the source material, turning a pretty well-loved side character into a Red Dragon pancake is like stabbing a knife through it".
For the fourth season, 100% of critics gave it a positive review with an average rating of 8.40/10, based on 11 reviews.
