✓ Like Idun: Frontline Survival, it's known for turn-based strategy, procedural generation and combat tactical
≠ Its own twist: roguelike runs, dark, oppressive atmosphere and punishing difficulty, while skipping real-time strategy
1999. Governments of the Earth have increasingly begun to receive reports of frequent UFO attacks on people and their abductions. To combat this scourge, they decide to create a service X-COM (Extraterrestrial Combat Unit ), which is designed to protect humanity from aliens. You play as the head of this service.
The game is played in two modes: strategic and tactical.
Where it drifts furthest from Idun: Frontline Survival: visuals and setting.
It predates Idun: Frontline Survival by 32 years, with what that implies technically.