Connect Balls - Line Puzzle -

Review by eFreeware

Connect Balls is a free puzzle game from BAF, Ltd. in which you draw lines between matching balls until every ball on the board is linked and no two lines cross. That is the whole idea, and it is the reason the game has found such a wide audience: more than 10 million installs and a 4.6 average from over 436,000 ratings. It was released in May 2022 and still receives updates, the most recent adding levels alongside fixes and performance work.

What makes me want to try it is how little it asks of you. There is no story to sit through, just boards that need untangling. The developer describes it as brain training that doubles as downtime, and that pairing is the main draw: a puzzle you can pick up when you have a few spare minutes and put down without losing anything.

Why a board of balls holds your attention

The appeal of a connect-the-balls game is that the rules fit in one breath while the boards do not. You are told to join identical balls with lines and to keep those lines from intersecting. Nothing else is explained because nothing else is needed. The difficulty comes from how those two requirements push against each other as the board fills up.

The developer warns that the game looks easy until you try it, and that gap between appearance and reality is the point. A layout that seems obvious at a glance can turn out to have exactly one arrangement that works. That is the sort of puzzle that keeps a player coming back, because failure feels like your own oversight rather than the game being unfair.

It is also pitched as relaxing, which sounds contradictory for something that can stump you, but the two ideas sit together better than you might expect. A difficult board is a thing to think through rather than a thing to survive. The developer even jokes that you may lose track of time, which is a fair description of any puzzle that rewards one more attempt.

The two rules that shape every board

The first mechanic is matching. Every ball on a board has at least one twin, and your job is to draw a line that joins the pair. The developer keeps this consistent across levels, so the goal never shifts underneath you; what changes is how many pairs you are juggling and how tightly they are packed.

The second mechanic is the constraint that gives the game its teeth: lines are not allowed to cross. This turns each board into a spatial problem rather than a memory test. You have to think about the route a line takes across the screen, not just which two balls belong together, because a correct pairing drawn the wrong way can block another pair entirely.

A board is finished when all the balls are connected. That clear end state is what makes the game easy to read at a glance: either the lines are all in place with no intersections, or something still needs moving. The developer frames the whole thing as a question of how many levels you can beat, which suggests a steady supply of boards rather than a single campaign with a finish line.

The input is as direct as it sounds. You draw from one ball to its match, and the game responds to where you put the line. There are no extra verbs to learn, which keeps the focus squarely on the arrangement in front of you.

How the difficulty creeps up

Because the rules never change, the developer has to escalate through the boards themselves. More pairs, more crowded layouts and more tempting wrong turns are the natural levers, and the promise of new levels in updates suggests that supply keeps growing. Anyone who has played this style of puzzle knows the moment when a board stops being a warm-up and starts demanding real thought.

That progression is what gives the game its staying power. A single rule set can carry a lot of levels if the layouts are designed with care, and the developer's own warning about the game being harder than it looks implies the later boards are meant to test you.

Where the game fits into a day

The developer suggests playing during a commute or before sleep, and those two moments capture the shape of the game well. A board takes as long as you want it to, so it works as a short distraction when you are waiting for something, and as a wind-down activity when you want your attention occupied without being overstimulated.

It also suits players who like logic puzzles but dislike being rushed. The pressure comes entirely from the puzzle itself. If you enjoy the satisfaction of a board clicking into place after a few false starts, this is built for that feeling.

The free price and the broad age rating make it easy to try without much commitment. It is the sort of game that can live on a phone for months, opened in spare moments rather than in long sessions, which is exactly how the developer seems to imagine it being played.

Ads, purchases and what they mean for you

Connect Balls is free to download and supported by ads, and it also offers in-app purchases.

None of this changes how the puzzles work. The rules, the boards and the goal are the same throughout, and the game has clearly found a large audience on those terms. The rating sits at 4.6 across a very large number of ratings.

A good fit for patient puzzle solvers

This is a game for people who like to sit with a problem and turn it over. It rewards careful looking rather than quick reflexes, and it is at its best when you have a few quiet minutes and no particular deadline. Anyone who enjoys logic puzzles, spatial reasoning or simply the pleasure of a tidy solution will find the format familiar and well suited to a phone screen.

It is less about spectacle and more about the small satisfaction of a board solved cleanly. The challenge is between you and the layout. For some players that is a limitation, and for others it is precisely the appeal.

The free download, the steady flow of new levels and the long track record since 2022 make it an easy thing to try. If you bounce off the first few boards, the later ones are unlikely to change your mind, because the rules never shift. If the first few boards hook you, the level count is the only thing standing between you and a long-running habit.

My recommendation on Connect Balls

Connect Balls does one thing and does it without clutter: you join matching balls, you keep the lines apart, and you move on to the next board. The 4.6 average from more than 436,000 ratings tells me that approach has landed with a lot of players, and the continued updates suggest the developer is still adding to it.

I would point this at anyone who wants a calm, free puzzle to dip into during a commute, before bed or in any other short gap in the day. It asks for patience and a willingness to redo a line rather than speed, and it gives back the quiet satisfaction of a board that finally falls into place.

If you are looking for a reason to keep a session going for an hour, this is not built for that. If you want a straightforward logic puzzle that respects your time and costs nothing to start, it is worth the download.

What's new in version 2.6.3

Thank you for playing "Connect Balls - Line Puzzle -"!! What's new: * New levels * Minor bug fixes * Game inprovements * Performance optimization