Exen made this as his challenge to top all levels in difficulty (except abyss of darkness and sakupen circles), and he made sure to decorate the level like that was its business. The level is very empty, but the moving spikes and pulses make the important parts, the gameplay, feel especially present and alive. This was Exen's best expression of his Ish ideas at the time, and it continues to hold up well to this day. For the gameplay, it's very slowly paced and unforgiving, but extremely straightfoward. When the drums pick up their rhythm, the script flips with breakneck wave, maze like and unfair patterns, but the level's brutal difficulty is maintained and climbs higher as the wave progresses to its completion.