The narrative of the game centers around Nikki and her cat friend Momo, who embark on a magical journey through Miraland after discovering a mystical dress. The story features a blend of traditional JRPG elements and unique twists, such as citizens falling into comas and conflicts with evil stylists, which add depth to the plot. The game introduces a mysterious goddess who awakens Nikki to a strange space and teaches her to harness the powers of miracle outfits. These outfits are crucial for traversing the terrain and stopping the world's destruction. While the story has some clichés, it evolves into more interesting and abstract directions, particularly after patch 1.5, which shifts the tone. The storytelling is compared favorably to Tales of games, with engaging narrative elements and quality voice acting, making it a traditional yet fresh JRPG experience.

Performance is excellent on PC and PS5, with the best experience on a good PC. The reviewer noted that playing on a phone is not recommended due to poor performance, and the Switch would struggle with the game's demands.

The game world of Miraland is a richly detailed and expansive environment, as highlighted by both assessments. Assessment 1 emphasizes the diversity of environments, including endless deserts, snowy peaks, treacherous paths, and dark caverns, along with intriguing lore elements such as the downfall of wishes in society and the origin of stylists. Assessment 2 complements this by noting the game's emphasis on exploration and interaction, with a wide variety of locations, mini-games, and activities spread across multiple regions and dimensions. Both assessments agree on the impressive scale and depth of the game world, though Assessment 2 places additional focus on the interactive and exploratory aspects of the game.

The game presents a diverse array of characters, with notable mentions of Ena, a mysterious figure, and the townsfolk of Miraland. Nikki, initially perceived as a leader, experiences a trope subversion as she earns the townsfolk's favor, adding depth to her character arc. Accompanying Nikki is her best friend, Momo, who plays a significant role in the narrative. The inclusion of various NPCs and characters enriches the story and enhances world-building, as highlighted in both assessments.

The game suffers from graphical issues on PS5, including pop-in and being stuck at 30 FPS, which detracts from the overall experience.

The narrative combines positivity with occasional melancholy, featuring a dense fantasy lore with serious stakes. The story is engaging and helps players care about the fantasy world, despite its complexity.

Exploration is a pivotal element in the game, as highlighted by both assessments. Players are encouraged to venture beyond the main path to uncover hidden items, solve puzzles, and engage with the environment. Assessment 1 emphasizes the game's mechanics, such as the floaty double jump, which enhance the exploration experience. Conversely, Assessment 2 underscores the excitement and variety that comes from discovering new zones and hidden areas, suggesting that the game fosters an independent exploration style. Both assessments agree on the importance of exploration but differ slightly in their focus, with one highlighting gameplay mechanics and the other emphasizing the sense of discovery and variety.

The game's art style is widely praised for its aesthetic appeal and attention to detail. Assessments highlight the vibrant, fantastical outfits and the polished presentation, with particular emphasis on the detailed rendering of clothing fabrics and the overall mesmerizing visuals. The use of Unreal Engine 5 is noted for contributing to the stunning visual quality. However, there are some points of contention, such as issues with pop-in and the game being stuck at 30 FPS on PS5, which detract from the overall experience.

The UI is intuitive and not overly confusing, with a generic but functional design. The menus are straightforward, aiding in a smooth gameplay experience.

Infinity Nikki demonstrates commendable technical quality for a free-to-play mobile game, featuring smooth animations, detailed environments, and engaging visual effects. While the overall performance is generally good, as noted by Assessment 2, there are occasional minor bugs and technical issues, such as freezing, that can disrupt gameplay, as highlighted in Assessment 1. Despite these minor drawbacks, the game's polished feel and solid performance, particularly for a mobile platform, are points of agreement between the assessments.