Royal Flux - The Astral Shadow Plague PC Steam CD Key

About this game

Simultaneous card battles

Royal Flux — The Astral Shadow Plague is a turn-based card battle game for single-player. Both sides place cards simultaneously, so you must read the board and plan your deck before combat resolves. Its three-kingdom Differential Engine gives an attacker a +10 power bonus when their group beats the opposing group: Ashenveil beats Solarch, Solarch beats Null Foundry, and Null Foundry beats Ashenveil. The deck builder shows draw probabilities as you choose from 18 races, each with its own tier, group, and role.

Campaigns, challenges, and deck building

Play solo against 3 distinct AI personalities, face another player in hotseat PvP with 2 players sharing 1 device, or take on the campaign solo or in local co-op. Its story moves through 3 rival regions, with 4 dungeons, shops, consumables, and a final boss along the way. Boss Challenge pits you against the Abyssal Maester across 3 difficulty tiers; in Survival, damage carries between fights and must be managed to keep the run going. Save up to 20 custom decks alongside 10 pre-built Alliance Codex configurations. Sigils add permanent bonuses to campaign and Survival runs, while deck constraints cap the total at 20 sets and any one race at 13. The game also includes 45 Steam achievements across its modes.

Steam activation key

This offer is for PC on Steam and is delivered as an activation key. It carries the Region Free label.