In Waylay you defend your castle against 10 waves. The twist: you lay the road the enemies walk on yourself.
Tap New Run in the menu. At the top is the gate the enemies come from, below it a short road of three tiles with your castle at its end. First you place your starter tower (an Arrow tower): tap a free tile next to the road. Every free tile that touches a road tile, diagonally too, is a tower spot.
You start with 20 lives and 0 gold.
Before every wave three cards lie at the bottom. You play exactly one of them, then the wave starts:
Don’t like any card? Tap Reroll 5g: for 5 gold you get three new cards. If you picked a card and change your mind, Back to cards takes you back as long as the card has not been played.
After Path +2 the tiles where the road can continue glow. Tap two of them, one after the other. The road grows at the castle, so the castle moves to the new end. Only tiles from which both tiles can actually be laid will glow; you cannot build a dead end.
A long road with many bends keeps the enemies under fire for longer and creates new tower spots. Every extra road tile has its price, though: each tile gives all enemies +2 % hit points, so a path card adds +4 %. In return every road tile pays you 1 gold after each wave.
You get gold for every enemy defeated (1 gold) and after every wave for every tile of your road (1 gold per tile). You spend it on Reroll and on tower levels:
The enemies leave the gate one after another and walk along the road to the castle. Every wave brings more of them, and they take more hits. There are normal, fast and armored enemies. Armor takes a little off every hit; only Venom’s poison goes straight through.
Every enemy that reaches the castle costs you 1 life. 1× and 2× at the bottom right switch between normal and double speed.
In wave 10 the boss comes first: slow, armored and with a lot of hit points.
You win as soon as wave 10 is empty and you still have at least one life. If your lives drop to 0, the run is lost. Afterwards you see your points and what you unlocked, see Ranks, Daily Challenge and goals.
The game saves on its own, at every change of phase and when you leave the app. In the menu, Continue takes you back. If you leave in the middle of a wave, that wave starts over when you continue, from the state at the start of the wave.
Pause stops the game. In the pause you can also switch sound and music on or off.