Cairn Cascade

Two sparks can wake an entire valley when they are placed in the right stones. Cairn Cascade is a collection of fifty directed-network puzzles about planning a chain reaction. Select your starting stones, ignite them together and watch energy spread through successive waves. Each standing stone has a small number indicating how many glowing incoming neighbors it needs. An arrow carries energy only from its source toward its pointed end. A nearby glowing stone has no effect unless an arrow connects it in the correct direction. Some stones respond to one active neighbor; others require two. Choose exactly two stones before starting the reaction. Tap a selected stone again to remove it, or replace your choice before igniting. The selection limit forces you to consider which parts of the network can wake themselves and which require an initial spark. A stone with no useful incoming energy is especially important to inspect. When you ignite, both selected stones become active. The next wave uses only the stones that were already active at the start of that wave. This makes the cascade understandable: a newly awakened stone influences a later wave rather than instantly triggering the entire network. Active stones remain awake throughout the attempt. Your goal is to wake all ten stones. If no further stone can meet its incoming-energy requirement, the cascade stops and you can retry with different seeds. Restart clears the selected sparks and all active energy. The same valley returns, allowing you to test a more carefully reasoned plan. Mossy carved stones, amber runes and a misty woodcut landscape distinguish the game’s presentation. Arrowheads show direction, numbers show requirements and glowing runes show activated stones. The collection groups the fifty challenges into five valleys, with completed entries marked so you can revisit earlier reactions. YOUR COLLECTION Play opens the challenge collection, where completed entries are marked and the next challenge unlocks after a success. Continue returns to the most recently selected challenge and restarts it from the beginning. Completed progress is saved locally on your device. You can revisit unlocked challenges whenever you want to practice the same content. COMFORT AND OFFLINE PLAY The main menu has Play, Settings, How to Play and Exit. Settings let you switch button sounds, touch feedback and decorative screen animation on or off. The help screen explains the rules and controls inside the app. The interface and instructions are in English. All fifty challenges are included in the installed game and work without an internet connection. There are no advertisements, in-app purchases, sign-in screens or online leaderboards. No account is needed. The game is designed for one player using a portrait phone screen. Its progress belongs to the current installation; there is no cloud synchronization or transfer service. Uninstalling the app removes its locally stored progress and settings.