Öoo

Introduction

Öoo casts the player as a small caterpillar made of bombs, using self-detonation as its primary tool for movement, puzzle-solving and exploration across a tightly built 2D world. Developed by Japanese solo creator NamaTakahashi alongside tiny cactus studio and Tsuyomi, it released 7 August 2025 for NZ$14.75 and immediately earned one of the strongest review records this outlet has documented — 99.3% positive across 6,533 all-language Steam reviews, 99.2% across 2,156 English-language reviews. This review reads all 18 of the game's English negative reviews, a corpus small enough to cover completely, and the exercise is instructive precisely because there's so little genuine criticism to find.

Design that earns the word "masterclass"

This review's positive sample uses that word specifically and repeatedly, and it's worth taking seriously as more than hyperbole. "An absolute masterclass in puzzle game design, and one of the most clever and best games I've ever played," reads one representative review. Another describes the core appeal precisely: "A perfectly flowing sequence of ingenious puzzles with the sort of charming presentation that cushions your head as you bang it against the wall trying to figure out a puzzle solution." What recurs across nearly every positive review is praise for how the game teaches itself — new mechanics are introduced through careful puzzle sequencing rather than explicit tutorial text, and several reviewers specifically credit that structural choice as respecting player intelligence rather than over-explaining. One reviewer sums up the specific joy of the core loop bluntly: "I love to make a bomb explode and think 'I am a genius' and that happened for me many times in this game."

The closest thing to a real complaint: it's short

Reading all 18 negative reviews in full, one theme recurs more than any other, and it's worth stating plainly that even this complaint is contested within the negative sample itself. Several reviewers argue the roughly two-to-three-hour completion time — with a documented world-record speedrun under 12 minutes — doesn't justify the asking price for buyers expecting a longer game. "I can't help but feel like I've been swindled out of my money by paying so much for a game that I beat in a single sitting," reads one, while still crediting the developer as "clearly very talented." Another proposes a specific fix rather than a blanket dismissal: recommend the base game at a lower price point and treat anything beyond that as a bonus. It's worth noting this isn't a complaint about quality — nearly every review raising length still describes the hours it does offer as excellent, which distinguishes it from a game padded to hide weak content.

Steam's own achievement data adds a useful, independent data point here. Across 12 achievements, the median completion rate is 82.35% — an extraordinarily high figure by this library's standards, where games commonly see single-digit or low-double-digit medians. That confirms directly what the length complaint implies: the overwhelming majority of buyers who start Öoo finish it, which is either the strongest possible argument that the short runtime is by design rather than a flaw, or at minimum evidence that the length doesn't stop players from completing what's there.

Smaller, specific quibbles

A handful of narrower technical complaints round out this review's negative sample. One reviewer carries over a specific interface criticism from the developer's earlier, similarly-styled game ElecHead: the world map is only accessible from warp terminals rather than anywhere in the game, an inconvenience for players doing heavier backtracking. Another reports the free demo failing to launch correctly on Steam Deck, though this review found no indication the issue extends to the full release. A small number of reviewers found the puzzles too gently signposted for their taste, preferring more resistance before a solution clicks — a matter of difficulty preference rather than a design flaw most other reviewers share.

Final Verdict

Öoo has earned its exceptional reputation through genuinely careful, inventive puzzle design that this review's full read of its negative sample does almost nothing to complicate — even its critics mostly concede the quality of what's there, disagreeing chiefly about whether a few hours of it is worth the asking price. Achievement data settles that question about as definitively as data can: an 82.35% median completion rate means this is a game that delivers on its promise for almost everyone who buys it, rather than one whose brevity leaves buyers feeling shortchanged. For puzzle-platformer fans specifically, this is as close to an unreserved recommendation as this outlet's coverage gets this year.