Touhou Eiyashou: Imperishable Night is an engaging action game set in the beloved Touhou universe, featuring eight playable characters. Players can choose from four preset teams of two, each offering unique gameplay mechanics. Character pairs employ different shooting styles based on their focus state, allowing for strategic gameplay. Individual character modes add further variety, though most maintain their shot types regardless of focus. This complexity enriches the player experience, catering to both newcomers and veterans alike.

The game introduces innovative mechanics such as Last Spells, which present players with challenging bonus encounters and powerful secondary attacks. The Time Orb system influences both story progression and scoring, encouraging players to manage their human/youkai gauge effectively. Overall, Imperishable Night combines intricate character dynamics with a compelling scoring system, delivering a captivating experience for action game enthusiasts.