X-Clash is an idle-first RPG set in a dual apocalypse where the Evil Void and an Undead Plague compete to erase humanity. You rebuild sanctuaries, collect heroes, and trigger narrative events while the game continues generating resources in the background. Manual play still matters—when bosses invade, X-Clash rewards quick formation swaps and ultimate timing. Expect a loop of base upgrades, hero cultivation, and Void Rift expeditions.