Route a river across a grid, place tree structures and troops, and survive waves of escalating orc hordes. Every cell you connect, every terrain you activate, and every card you play shapes the battlefield.
Water flows from a single source, and you extend it one cell at a time. The path you carve determines which bonuses fire, which groves you awaken, and whether your Forest Core gets the power it needs to survive. Choose poorly and your defenses crumble. Choose well and watch bonuses cascade downstream.