TIERRA - Mystery Point & Click Adventure

The pitch

TIERRA - Mystery Point & Click Adventure is a first-person point-and-click puzzle game from M9 Games, a solo British indie developer whose games (AYUDA, TIERRA, TARAKAN, MISTICO) form a loose, "to be continued" series of standalone puzzle boxes rather than one continuous story. The store page frames TIERRA as a follow-on from an earlier adventure on "the island of Ayuda": the player, recovering from that trip, follows a downloaded orienteering map through a local woodland and stumbles on buildings and pathways that don't appear on any map. From there it's classic click-to-move navigation, an inventory of collectible items that can be picked up, combined and used, and a chain of environmental puzzles standing between the player and whatever secret the woods are hiding. It released on Steam on 20 July 2021 for NZ$8.89 (there is no discount active at the time of writing), and is Windows-only there, with separate mobile releases on iOS and Android under the developer's own storefronts.

The puzzles are the one thing that consistently works

TIERRA's Steam reviews are genuinely split — 7 positive against 4 negative out of 11 total English reviews, which Steam's own algorithm reads as "Mixed" at that volume — but there's one thing reviewers on both sides agree on: the individual puzzles are constructed well. A player who otherwise found the game frustrating still wrote "some of the puzzles I liked," and a positive review calls it "mind challenging" and says flatly "loved it." A self-described novice player enjoying the pace wrote that the graphics and audio felt "just right" for what the game was going for, even while admitting to being stuck and hoping the developer would step in with a hint. That last detail matters: the store page itself offers direct email or social-media support for players who get stuck, which is a very solo-developer way of handling a hint system, and it lines up with what the puzzles actually are — logical, but not always intuitively signposted.

This review reads every one of TIERRA's 11 English Steam reviews — a small enough corpus that nothing needed sampling — and the puzzle-logic praise shows up in reviews that are otherwise critical, not just the positive ones. That's a stronger signal than a simple thumbs-up count: even the players walking away unhappy aren't blaming the puzzle design itself.

Where it falls down: presentation, not concept

The complaints cluster tightly around the game's edges rather than its puzzles. The most common, appearing across several negative reviews independently, is that TIERRA gives the player almost no indication of where they're allowed to walk — click-to-move games live or die on that kind of signposting, and without it players report "spamming" clicks around the screen to find the next valid path. One reviewer's very first ask, in an otherwise positive review, was simply "would be nice to have some indication of where you can move."

The second recurring complaint is the complete absence of a settings menu. The same reviewer who asked for movement indicators followed it immediately with "ADD SETTINGS MENU! Sound is too loud and you can not change it" — there is no way to lower the soundtrack, remap anything, or adjust display options. One reviewer reports the only way they found to quit the game entirely was Alt-F4, meaning even exiting cleanly isn't provided as a menu option.

A smaller but sharper complaint is puzzle-item logic that a few reviewers found arbitrary rather than fair: a locked door that a crowbar won't open but a specific key will, something that needs cutting that a knife won't manage but a particular pair of clippers will. One detailed negative review calls this out directly, writing that "the lack of sense" in some of these substitutions, combined with the navigation issues, was enough to request a refund after half an hour. A separate review reports puzzle-solution bugs — entering the correct combination and having it not register on the first attempt, causing "a little confusion" even for a player who otherwise enjoyed the gameplay.

Story: the part the store page oversells

The most substantive negative review in the corpus makes a point worth taking seriously: TIERRA is marketed as a "mystery point & click adventure," but the reviewer argues it isn't really an adventure game at all — it's an escape room with an adventure-game skin. "There appears to be NO story, no back story," they write, "no pieces of paper that explain why we are there." Compared against other one-person-developed point-and-click games they'd played recently, they found TIERRA came up short on exactly this axis. That tracks with the wider M9 Games catalogue: the series across AYUDA, TIERRA and TARAKAN is explicitly "to be continued" rather than self-contained, and one longtime-series reviewer (reviewing a later entry, but describing the pattern across all of them) suggested the games would work far better consolidated into one release with a real arc, rather than sold separately as short standalone chapters that each end on a cliffhanger.

Value: the number every review converges on

Whatever side of the "recommend" line a review lands on, the runtime estimate is remarkably consistent. One reviewer calls it "less than 1/2 hour of gameplay." Another, playing at a promotional 10% discount, still didn't feel they'd gotten their money's worth. A third, more forgiving review still opens with "too dang short," even while praising the puzzle logic and production values. Recorded playtimes in the review data range from 35 minutes up to nearly five hours for the more thorough or stuck players, but the reviews that specifically discuss value all converge on the same complaint: this is priced closer to a full adventure game than the roughly half-hour-to-two-hour experience most players report finishing it in. One long-time player of the developer's other games puts it plainly, suggesting a fair price would be a third to a half of what similar entries in the series actually charge.

Verdict

TIERRA gets the part that's hardest to fake right — its puzzles are logically constructed, and even the reviewers who bounced off the game credit that much. What it doesn't get right is everything wrapped around that core: no settings menu, unclear navigation, a couple of puzzles gated by arbitrary item logic rather than fair logic, and a runtime that multiple independent reviewers clock at well under an hour against a price built for something longer. Marketed as a "mystery adventure," it plays closer to a short, well-made escape room with almost no story to justify the framing. If you specifically want a brief, standalone puzzle box and don't need a narrative to carry you there, it's a defensible few dollars. If you're expecting the mystery and the adventure the title promises, this isn't where you'll find it.