EXOTERRA: A Space Journey

EXOTERRA: A Space Journey puts players in the boots of Gina Chun, an astronaut who wakes up alone aboard the spacecraft HOPE-03, disconnected and adrift with no sign of the rest of her crew. It's a first-person, escape-room-style puzzle game in which the entire ship functions as one interlocking puzzle box: finding keycards, cracking codes, and reconnecting systems to get HOPE-03 moving again toward its destination at Proxima Centauri. It's developed and published solo by ManuHerreraDev, released 27 March 2026, and it's entirely free. This review draws on 58 lifetime reviews — a large sample for a free indie title — plus the developer's two post-launch patches.

A ship reviewers keep calling beautiful

The dominant, most consistent praise in this review's sample is for HOPE-03 itself as a space to explore. One of the most detailed positive reviews in this review's sample described it as "beautifully realized and a delight to explore," and that sentiment recurs across languages in this review's sample: an English reviewer wrote simply "insane graphics!", and a Turkish reviewer, after initially expecting "yine bir uzay puzzle oyunu" (yet another space puzzle game), found the experience "oldukça tatmin edici" (quite satisfying). For a free, solo-developed title, this review finds that level and breadth of praise for pure environmental craft genuinely notable.

The puzzle loop, and a well-liked bonus hunt

Gameplay, per this review's sample, centers on traversing the ship, decoding cabinet combinations, and tracking down keycards that don't always open the door nearest to where they're found — one reviewer specifically noted needing to "build a mental map of the environment because the key card you find in one room may open a door on the opposite side of the ship." Layered on top of the main puzzle chain is a hidden-collectible side hunt for four colored rubber ducks, which multiple reviewers in this review's sample mention by name and clearly enjoyed. This review's own achievement-data check backs up exactly what the sample implies about that hunt's difficulty curve: the easiest duck (yellow) sits at 44.8% completion, while the hardest (red) sits at just 13.8%, confirming the "some are much harder to spot" framing reviewers gave it.

A serious flaw this review found independently corroborated twice

Set against that praise, this review identified one specific, repeated, and serious complaint: EXOTERRA has no save system at all, and must be completed in a single uninterrupted sitting. This review does not take that claim on a single account — it found it raised independently by two unrelated reviewers in two different languages. One English-language reviewer, after an otherwise measured and positive writeup, called it bluntly: "For me, the inability to save my game is a deal-breaker." A separate French-language reviewer, with no apparent connection to the first, raised the identical specific issue: "Manque des sauvegardes (auto ou manuelles)" — missing save functionality, whether automatic or manual. This review's check of the two available post-launch patches found no mention of a save system being added, meaning the issue remains open as of this review's research date. For a puzzle game that several reviewers in this review's sample describe taking one to two hours to finish, that's a real accessibility limitation, not a minor nitpick.

Shorter, and less tense, than its premise promises

This review's sample also includes a credible report that the game's scope is smaller than its marketing suggests, describing the explorable, puzzle-bearing portion of the ship as effectively just two rooms once the framing is stripped away. This review's own read of the achievement completion curve is consistent with that account: no achievement clears 45%, and most sit in the 13-30% band, a pattern typical of a short experience most players who start it also finish. Separately, this review's most detailed positive reviewer, while praising the ship's visuals, noted the sound design was minimal and that the game never generated real dread or urgency despite a premise built around waking up as the apparent sole survivor of a dead crew — a missed opportunity this review agrees is worth flagging, given how strong the atmospheric groundwork otherwise is.

Technical rough edges this review's patches haven't yet resolved

This review's sample also surfaced two distinct technical complaints not addressed by either of the developer's two available patches, both issued within a week of launch and focused on a camera glitch, a misplaced wall, a lighting bug, and a battery-duplication bug. One reviewer reported the game "making my PC freak out" even with graphics turned to low and no frame-rate control available, on hardware they described as capable of running most games well. A separate reviewer reported a late-game blocking bug involving battery placement and a short-circuited power-room screen that prevented them from continuing. Combined with the missing save system, this review reads EXOTERRA as a genuinely promising but still rough-edged solo project whose developer has shown fast initial responsiveness but hasn't yet caught everything the review sample has flagged.

Verdict

EXOTERRA: A Space Journey is a free, visually striking, solo-developed escape-room puzzler that earns its "Very Positive" review sample largely on the strength of its ship environment and a well-liked hidden-duck side hunt, both of which this review's own achievement-data check corroborates. But this review takes its no-save-system flaw seriously precisely because two independent reviewers, writing in different languages with no apparent connection, landed on the identical specific complaint — that's a real design gap, not an outlier opinion, and it's compounded by unresolved reports of performance trouble and a late-game blocking bug. At a price of exactly nothing, this is still an easy recommendation for puzzle fans who can carve out one sitting; anyone who can't, or who wants their stranded-in-space premise to generate real tension, should go in with tempered expectations.