Rune Flow: A Beginner's Walkthrough

The goal in one sentence

In Rune Flow you connect each pair of matching crystals with a single glowing path, and you must fill every cell on the board to finish a level. That is the entire game in one breath, and it is genuinely as simple as it sounds. Two rules shape everything that follows from there. First, paths are never allowed to cross one another at any point. Second, no square may be left empty when you are done, not even a single one tucked away in a corner. Hold both of those rules in mind from your very first board and the puzzles stop feeling mysterious almost immediately, because every clever-looking solution turns out to be nothing more than those two plain rules working together on a small grid. The reason the game feels calm rather than fiddly is that there is so little to actually remember. Connect the matching colors, cover every cell, and keep the lines apart from each other, and the rest is just patient, unhurried looking.

How to draw a path

To draw a path, find two crystals of the same color and drag from one of them toward the other across the grid. The path simply follows your finger through each cell it passes over on the way. If you take a wrong turn somewhere, you can pull the path back along the route it came, or clear it entirely and start that connection again from scratch. There is no penalty whatsoever for experimenting, which is important to internalize early, so feel completely free to try a route, watch where it actually leads, and then change your mind without a second thought. A great deal of learning Rune Flow is exactly this: trying a path, noticing which cells it accidentally strands with nowhere left to connect, adjusting, and trying again. The game is built from the ground up to let you do that freely and forgivingly, so treat every board as a rough sketch you are allowed to redraw as many times as you like until the whole thing finally clicks into place.

Start where there are fewest choices

The easiest place to begin any board is a corner or an edge, and starting there rather than in the middle is the single habit that helps new players most. A crystal tucked into a corner can only be reached from two directions, which means its path very nearly draws itself for the first step or two, with barely any choice to agonize over. Lay down those almost-forced routes first, before you touch the open center at all, and each edge path you commit quietly removes options from the cells beside it until the middle becomes far clearer than it looked at the start. This connects directly to the rule new players forget most often, which is that connecting the pairs is only half of the whole job. If your finished paths leave even one empty square that nothing can reach, the level is simply not solved, however neat and tidy your connections happen to look. Because of that, the shortest and straightest line between two crystals is frequently the wrong choice, and the correct route often has to wind the long way around on purpose, sweeping up cells a direct line would have skipped and leaving absolutely nothing stranded behind it.

A simple first strategy

1. Connect any pair that clearly has only one sensible route, usually one sitting right against an edge.
2. Look carefully at the remaining empty cells and ask which path could possibly cover each of them.
3. Send your paths on deliberate detours wherever needed, so that no square is ever left stranded.
4. If two paths both want the same cell, back one of them up and reroute it rather than forcing a crossing.
5. Before you finish, scan the whole grid once more for any empty square, because a completely full board is the real finish line.

The modes to explore

Once the basics feel natural, Rune Flow opens up several different ways to play. Levels is an endless run of boards that grow steadily with you as your instincts sharpen over time. The Daily Challenge offers one fresh puzzle every day, a small ritual to return to. No Mistakes ends the moment you slip, turning each board into a quiet test of how far your careful planning can carry you, and Speed Run asks how many boards you can solve before the clock finally runs out. Start with plain Levels to build your instincts on forgiving ground, then branch out into the others whenever you feel ready for a new kind of pressure. Throughout all of them, the crystals differ by shape as well as by color, so the board stays clear and friendly whichever mode you happen to choose, and colorblind players are never left guessing. If you would like to start solving, Rune Flow is a free download on Google Play at play.google.com/store/apps/details?id=com.snailpixel.runeflow.