永夜之役 is a free-to-play mobile game that takes place in a unique mythological universe. With its adorable and cute art style, the game offers a diverse range of gameplay features. Players can acquire contracts through various in-game systems, summon divine beings as companions, and strengthen them through upgrades and advancements to form formidable teams for battles. The game boasts stunning 2D visuals, gorgeous character effects, and smooth gameplay, aiming to provide players with a perfect gaming experience. The character designs draw inspiration from ancient mythologies from around the world, featuring exquisite illustrations and individual voice acting for each character, resulting in an exceptional gaming experience. The UI layout is clear and user-friendly, making it easy for players to get started. The game offers innovative and strategic gameplay, including five different job systems and four camp combinations. In addition to the relaxing and nurturing gameplay, there are various PVE and PVP modes for players to enjoy. PVE features include purification grounds, endless tower, daily dungeons, divine trials, world bosses, treasure hunting, and adventure dungeons. PVP modes include arenas, championship battles, team competitions, and guild wars. In addition to the regular adventure stages, arenas, endless tower, and invasions from other races, the game also introduces unique gameplay elements such as companion camp attributes, companion skills, and formation setups.