What do I do when there are no squares left?

Put the money into the towers you already have. An upgraded tower keeps the same reach, so it is more damage in one place rather than damage in a new one.

Does the game ever end on its own?

No. It ends when your wall does.

No Way Through

How to play

Stop everything on the road from reaching your wall. There is no finish line — your score is the number of waves you survive.

Tap a tower at the bottom of the screen, then tap any square that is not road.
Tap a tower you already own, with that same kind selected, to upgrade it.
Money comes only from kills. Nothing else earns.
Frost does no damage. It slows whatever walks through its ring, and the slow stays on for a while after.
Towers cannot be sold or moved.
Anything that reaches the far end takes a piece of your wall. When the wall is gone, the run is over.

Tap a tower at the bottom, then tap a square beside the road.

About No Way Through

A single road doubles back across the board, and something walks it every few seconds. You have a wall at the far end and no way to move it, so the only thing you can do is put towers on the squares beside the road and pay for them with what you kill. Bolts are cheap and quick. Mortars cost more, hit harder and catch a crowd. Frost does no damage at all — it chills whatever passes it, so everything further along the road gets longer to shoot. Nothing can be sold or moved once it is down, and there are only so many squares, so every rupee is a choice between another tower and a better one. Each wave is heavier than the last. The score is how many of them you see off.

Questions

What do I do when there are no squares left?: Put the money into the towers you already have. An upgraded tower keeps the same reach, so it is more damage in one place rather than damage in a new one.
Does the game ever end on its own?: No. It ends when your wall does.

How to play ↓