RaidersSphere4th

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RaidersSphere4th is a single player arcade simulation game with anime and science fiction themes. It was developed by Rectangle and was released on June 1, 2015. It received mostly positive reviews from players.

In the distant future, humanity has turned Venus into a livable environment. However, not all is well on Venusian soil as political intrigue pushes the way to help a young girl, the ace pilot known as Sonic Venus, to find the whereabouts of her missing father.

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Single-Player

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77%

Audience ScoreBased on 124 reviews

story32 positive mentions

graphics11 negative mentions

Gameplay closely resembles classic Ace Combat titles with tight and responsive flight controls, providing an engaging arcade flight sim experience.
The game offers a unique sci-fi setting on a terraformed Venus with interesting characters and a story that includes political intrigue and intriguing twists.
Includes a good variety of missions (around 30), with diverse objectives such as ground targets, dogfights, and unique mission gimmicks, enhancing replayability.

Graphics and textures are severely outdated, often making it hard to distinguish terrain from sky or obstacles, which can cause frustrating crashes.
Control schemes and controller support are clunky and unintuitive, requiring manual rebinding and workaround solutions; keyboard controls are difficult for many players.
The game features AI and balance issues such as enemy missiles having excessively strong homing, frequent buggy behavior, and some frustrating or poorly designed missions.

story
156 mentions Positive Neutral Negative
21%
75%
4%
The story in Raider Sphere 4th is generally praised for its engaging, anime-style visual novel presentation, with a clear plot that progresses through 30 varied missions and incorporates intriguing settings and twists reminiscent of Ace Combat. However, it is also criticized for occasional pacing issues, rough translation, and a somewhat disjointed or predictable narrative that can feel rushed or incomplete at times. Overall, while the story adds an immersive layer to the gameplay, it may not fully satisfy those seeking deep or highly original storytelling.
- “The story takes place on Venus, years after an immigration initiative and in the aftermath of an economic bubble's burst, where the Sentinels of Terra, a UN organization, is trying to keep things from spiraling out of control, and the Venus mining initiative has gotten a monopoly because they were one of the few companies to survive the economic failure.”
- “Storywise, you and your companions take on missions as independents at the beginning while also desiring to figure out a mystery that drives the characters.”
- “All in all, Raider Sphere 4th is a game that pays a wonderful homage to Ace Combat while offering its own unique story to tell, with a storytelling technique most similar to a visual novel.”
- “Terrible, incomprehensible story with a bad translation.”
- “The story overall is pretty lackluster in my opinion, and somewhat predictable.”
- “The graphics are mediocre and in my opinion the story is not very interesting, and I honestly think the visual novel parts in-between should just be cut.”
graphics
58 mentions Positive Neutral Negative
12%
69%
19%
The graphics are widely described as outdated, resembling early PlayStation 2 or even PlayStation 1-era visuals with low-budget, amateurish design and limited polish. While many note that the graphics may detract from immersion, especially due to poor textures and dull environments, some appreciate the retro aesthetic and find it fitting for the game's arcade-style combat. Overall, the visuals require players to overlook their dated quality in favor of gameplay and nostalgia.
- “The graphics may not be all that pretty, but it definitely nails the whole "retro arcade" vibe.”
- “The visuals and sound feel surprisingly nostalgic, like the early 3D era of Japanese video games on PSone and Dreamcast.”
- “I personally think that the graphic style of this game is like a mix between Ace Combat 3, Rebel Raiders: Operation Nighthawk (but better than that), and the Airforce Delta series.”
- “There are a number of missions that are incredibly disorienting solely due to the graphics choices where ground, sky, and sometimes even walls are really close in color.”
- “The graphics are unfortunately below average, which wouldn't bother me in the slightest (Xenogears is one of my favorite games), but for a game that revolves around flying, one would consider it crucial to have a decent skybox and a field of vision, which is not the case.”
- “For a game released in 2013 to have graphics matching that of those released in 2000-ish, I was ready to be disappointed.”
gameplay
41 mentions Positive Neutral Negative
24%
69%
7%
The gameplay is widely praised for delivering a solid, fun experience reminiscent of classic Ace Combat titles, featuring responsive controls, engaging dogfights, and a strategic weapon system. While some minor control scheme quirks and occasional technical issues arise, the core flying mechanics and mission designs capture the spirit of the genre effectively. However, a few reviewers note the gameplay can feel less polished or a bit unfinished, especially in comparison to more refined predecessors.
- “The gameplay is distinctly similar to Ace Combat, especially earlier iterations since AC4 and so on were the latest releases at the time, but the main difference is a Project Wingman-like pylon equip system and the fact that you're piloting small, agile, and still well-armed aircraft.”
- “A lot of nods and references, like the hangar section being similar to Ace Combat, the verbose plane and weapon descriptions, the mix of rock and techno soundtrack, most of the mechanics and interface, the first desert mission reminding me of Ace Combat 1, the attempt at recreating the pre-mission map flyovers, the character driven story perhaps more reminiscent of Ace Combat 3, 4 and onward... they nailed a lot of what makes Ace Combat an Ace Combat game, including the flying model and most of the game mechanics.”
- “The controls are nice and responsive, the weapon system is great, and it really brings you the type of gameplay Ace Combat delivered in the PS2 days.”
- “I really don't know what's worse here, the lame visual novel Engrish translated train wreck, or the completely dismal attempt at a 'flight sim' (I can't stress how lazy/low quality the assets and gameplay here are).”
- “The story, voice acting and art is actually pretty good, and the people who made the story probably gave a damn but the people who made the gameplay could either care less or were so incompetent that just making the airplane fly around like flappy bird 3D was a miracle to them.”
- “It's an Ace Combat knock-off with deplorable graphics, horrible gameplay, a lousy anime story, and idiotic mission design.”
music
20 mentions Positive Neutral Negative
55%
30%
15%
The music in the game is widely praised for being varied, well-crafted, and effectively enhancing the atmosphere and story moments, with a strong blend of electronic and symphonic elements. While some tracks are exceptional and memorable, others receive mixed reactions, and occasional audio glitches slightly detract from the experience. Overall, the soundtrack is considered one of the game's best features, elevating gameplay and immersion.
- “Music: the music is varied and well-crafted, suitably selling the part of the story you're in right now.”
- “From introducing the Southline family to the final showdown, the music will immerse you nicely.”
- “The sound quality is not top notch, but the melodic, well-arranged, and overall memorable soundtrack makes up for it in spades.”
- “It's not a bad game, but I can't recommend it to the general public - it has heavily "doujin" quality, with lots of bare bones areas and tons of annoying audio glitches (such as music starting to loop on its own, or missile alert sounds that don't stop, and no game credit ending).”
- “The soundtrack is hit or miss, with some tracks being amazing and others being on the "meh" side.”
- “Weak points are the soundtrack and fighter designs, but the gameplay is solid fun.”
optimization
7 mentions Positive Neutral Negative
43%
14%
43%
Optimization is inconsistent, with generally good performance on Windows but noticeable drops due to poorly optimized shaders, especially on certain hardware like RTX cards. Disabling shaders or using alternatives like reshade can help maintain visual quality without sacrificing performance.
- “Performance is great on Windows.”
- “If you experience performance drops, I suggest turning off shaders as the game still looks good without them, or you can use Reshade which does a better job overall.”
- “Water requires at least "high" shader settings to look good, which is poorly optimized.”
- “Shaders are poorly optimized, causing performance drops even on an RTX card.”
- “Water requires at least 'high' shader settings to look good, which is poorly optimized.”
- “Performance can be a bit iffy, indicating inconsistent optimization.”
stability
5 mentions Positive Neutral Negative
100%
The game's stability is hindered by numerous bugs and glitches, including problematic audio loops, timer issues during post-mission scenes, and overall outdated, bare-bones presentation. While the futuristic setting and fun gameplay moments shine through, the current early access state results in a frustrating and inconsistent experience not suited for a general audience.
- “It's not a bad game, but I can't recommend it to the general public - it's heavily 'doujin' quality, with many bare-bone areas and tons of annoying audio glitches (like music starting to loop on its own, or missile alert sounds not stopping, no game credit ending).”
- “Where I quit in frustration was after taking down one particularly annoying enemy superweapon (cool setting though), only to discover that whereas AC freezes the timer after mission objectives are completed, RS4 slapped me with a time out failure during the post-mission celebratory dialogue as the timer ran out during it.”
- “Well, since this is currently in early access, expect several bugs / glitches in the game.”
atmosphere
2 mentions Positive Neutral Negative
100%
The improved radio chatter and background sounds significantly enhance the game's atmosphere, adding an authentic and immersive ace combat feel. This auditory design is widely regarded as the standout feature, effectively elevating the overall experience.
- “Chatter over the radio sounds noticeably improved, which fits the game's timeframe well, and the background chatter adds that authentic Ace Combat flair to the atmosphere.”
- “The soundtrack is likely the best part of the game, perfectly lifting the atmosphere to new heights.”
grinding
2 mentions Positive Neutral Negative
100%
The grinding in the game is described as tedious and unfun, with frustrating dogfights where enemies are difficult to hit yet can easily damage the player. The mechanics feel slow and cumbersome compared to similar arcade flight games, leading to a lackluster and repetitive experience.
- “Every dogfight is tedious because half the time the enemies are almost at stall speed, and despite the fact that you cannot hit them in a light turn, the enemies will hit you in everything (even on poor angles) but a full-on turn (which you must accelerate up to, something unseen in both simulator and arcade games like Ace Combat), and even then the missiles will potentially kill you.”
- “All in all, the game is tedious, unfun, and probably one of the most lazy impressions of the 'blowing stuff up with airplanes' arcade experience that Ace Combat has to offer.”
humor
1 mentions Positive Neutral Negative
100%
The humor in the game comes from ironic and unexpected situations, such as being outsmarted by the game’s own mechanics, which some players find amusing in a sarcastic way.
character development
1 mentions Positive Neutral Negative
100%
The character development is generally seen as weak, with particular criticism aimed at the villain, whose motivations and depth are notably underdeveloped.
- “What I found most lacking was the villain's character development.”
emotional
1 mentions Positive Neutral Negative
100%
The game delivers a well-balanced emotional experience, blending heartwarming and cozy moments with intense, inspiring sequences, enhanced by a complementary soundtrack.
- “Combined with the soundtrack, it provides heartwarming, cozy, and in contrast, ass-kicking and inspiring moments.”
replayability
1 mentions Positive Neutral Negative
100%
The game's improved design significantly enhances its replayability, offering a more engaging and enjoyable experience than the original version.

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Frequently Asked Questions

RaidersSphere4th is a arcade simulation game with anime and science fiction themes.

RaidersSphere4th is available on PC, Virtual Reality and Windows.

RaidersSphere4th was released on June 1, 2015.

RaidersSphere4th was developed by Rectangle.

RaidersSphere4th has received mostly positive reviews from players. Most players liked RaidersSphere4th for its story but disliked it for its graphics.

RaidersSphere4th is a single player game.

Similar games include Project Wingman, Project Nimbus, Vector Thrust, Ace Combat 7: Skies Unknown, Flying Tigers: Shadows Over China and others.

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