Halcyon Days: Sunny Days with Sister-chan

Editorial Has potential

Halcyon Days is a character-driven incremental game about building a relationship with a sister character through daily interactions—talking, touching, and progressing through multiple routes (consensual, forced, unconscious) depending on affection and acceptance stats. Players praise the character art and the variety of unlockable content, and some find the pacing rewarding once they understand the mechanics. However, the game is visibly unfinished: the developer has publicly delayed updates multiple times (most recently citing "RPGM skill issue and lack of development time"), with only fragmentary new content promised. The current build is playable but rough—common reports of touchscreen bugs on mobile (JoiPlay), Wine compatibility issues, and confusion about save-file locations. Community feedback is divided between those invested enough to wait and those frustrated by the slow, halting development cycle.