Hexologic

Puzzle games based on numbers have a credibility problem. The app stores are full of Sudoku clones with ads, daily-streak tricks and “hint” systems built to sell coins. Hexologic, from Polish studio MythicOwl, is the opposite of that. It’s small, it’s confident, and it assumes you can think.

The idea is almost insultingly simple. Each board is a cluster of hexagons with target numbers along its edges. You tap a hex to fill it with one, two or three dots, and every line of hexes has to add up exactly to the number at its tip. If you’ve played Kakuro, you already know the basics. If you’ve played Sudoku, you’ll recognise the discipline of ruling out options instead of guessing.

What changes everything is the geometry. A square grid gives each cell two constraints, its row and its column. A hexagonal grid gives up to three. Each dot you place ripples along three axes at once, so a guess that looks fine on one line can quietly wreck the other two. That one structural change makes an old rule feel new.

The game is split across themed worlds of hand-designed levels, plus bonus stages and content added in later updates. Each world adds its own twist, such as pre-filled cells or blocked hexes. That keeps the difficulty rising without piling on rules.

In the market, Hexologic sits in the premium-minimalist tier with Mini Metro, Hitman GO and Zach Gage’s more meditative work: short games, one clear idea, no filler. It sells on iOS, Android, Steam and Nintendo Switch as a one-time $4.99 purchase with no data collection, which is close to a political statement in this market. It holds 4.7 out of 5 from 995 App Store ratings — numbers that are hard to fake, and in this case they’re earned.

• Hexagonal sum logic: Each hex holds 1–3 dots and sits on up to three lines, so every move affects several sums. The game rewards deduction and punishes guessing.
• Themed worlds: Hand-built levels across several worlds, each adding a mechanic such as pre-filled or blocked cells, so the ideas change as well as the difficulty.
• No text at all: The design is language-independent. There are no tutorials to read and no wall of instructions; the puzzles teach themselves.
• Steam level editor with Workshop support: The PC version lets players build and share their own boards, which directly addresses the game’s biggest weakness, its length.
• Honest monetisation: On mobile you pay once, with no ads, no energy meters and no data collection.
• Post-launch content: Free updates added new levels and biomes on Switch, plus an infinite mode on mobile.

The Core Loop

Hexologic’s loop is short by design: look at the board, spot the most constrained line, commit to a value, and see what that forces elsewhere. Early boards are built to resolve in moments; late ones are built to stall you, mostly in thought rather than tapping. That’s the right ratio for a logic game. The time spent thinking should far outweigh the time spent tapping.

The dot limit is the smartest decision in the design. Kakuro uses the digits 1–9, which gives you a large search space and a lot of scribbled arithmetic. Hexologic allows only 1, 2 or 3. That sounds like it would make things easier, and at first it does. But a small value range makes the maths trivial and moves the difficulty into how the lines interact. You’re never working out whether seven plus five makes twelve. You’re working out that this corner hex must be a 3, because the line through it needs 8 across three cells and its neighbour can’t go above 2. It’s a puzzle about constraint propagation, and it feels like one.

Difficulty Curve and Onboarding

Onboarding is nearly invisible, and that’s a compliment. With no text, the first levels are small enough that the only way to fail is not to try. By the second world the idea that one hex feeds several sums has landed without a word of explanation. This is good tutorial design, and too few mobile games manage it.

The game starts simple and becomes very complex. The curve is smooth for most of the run, and each world’s new mechanic arrives at about the point where the last one has been mastered. Blocked cells break lines into pieces and change which edges are the good entry points. Pre-filled cells look like help but often act as traps that force you into a particular solution path. None of these mechanics is dramatic. Together, they keep the game from settling into routine.

The Length Problem

The main complaint is fair. Hexologic is short. The campaign is compact enough that a committed puzzle player will clear it quickly, and that’s the game’s most repeated criticism for a reason. The later updates help. The Switch content drop and the mobile infinite mode both push back on the “is that it?” feeling. But procedurally generated infinite modes rarely match hand-built puzzles, because the pleasure of a designed board comes from knowing someone planned the “aha” moment.

This is where the platform versions really differ. The Steam level editor and Workshop go some way to fixing the length problem, because a community can produce content faster than any small studio. On mobile, once the curated levels are done, the infinite mode is what remains.

Friction Points

The game has little friction to speak of. The input model, tapping to cycle a hex through its dot states, is direct and quick. Because each cell has only four states (empty, 1, 2, 3), cycling never gets tedious the way a nine-value picker would. The one conceptual weakness is that late puzzles occasionally rely on a single hard-to-see deduction, and the game offers little help when it’s missed. That’s defensible for a purist puzzle game, but players who get stuck may simply stop playing.

MythicOwl chose an atmospheric minimalism: soft gradients, clean hexagonal geometry, and themed backdrops that change by world without cluttering the board. Readability comes first. Dot counts are clear at a glance, even on a phone screen, which matters when reading three overlapping lines at once. The ambient soundtrack is gentle and sets up the right mental state for the game — calming without being soporific.

Performance should not be a concern. This is a 2D puzzle game of modest scope, and it’s light on hardware by nature. The only criticism is that the visual language barely changes across the worlds. The backdrops change, but the board itself doesn’t. That consistency helps readability, though it means the game has few visual surprises left by the end.

• iOS & Android: These are the natural home for the design. Tapping hexes directly is the most natural input, the short levels suit a commute, and the $4.99 one-time price with no data collection is fair value. Very small phones can make dense late-game boards a little cramped, but the clean art keeps things readable. Mobile also gets the infinite mode, which partly makes up for the missing editor.
• Steam: This is the most complete version. Mouse input is exact and fast, and the level editor with Workshop support gives the game a life beyond its campaign. Achievements, trading cards and cloud saves round it out, although the text-free design means extras like language support matter less than usual.
• Nintendo Switch: Handheld mode with touch plays much like the phone version on a bigger screen. Docked play with a controller works, but moving a cursor across hexes is inherently slower than tapping. The Switch version got the new levels and biomes update, so on content alone it’s a reasonable choice for anyone without the Steam editor.

Hexologic doesn’t reinvent the logic puzzle. It changes one thing, the shape of the grid, and follows that change through carefully. The result is a game where every move matters on three axes, every world adds a meaningful twist, and not a single screen wastes your attention. It’s short, and the length complaints are legitimate; the occasional unhelpful spike doesn’t help either. But a small game made with this much precision beats a bloated one you drop after a week. We recommend it to puzzle fans who value deduction and clean design over sheer volume — on mobile as a worthwhile purchase, and on Steam as the fuller package thanks to the editor. MythicOwl built something modest in scope and carefully made, which is exactly what this genre needs more of.