Overview
Play opens The Crimson Circuit. Start an investigation, inspect the live evidence, reveal clues when needed, identify the required pathology/rhythm, then select an intervention after the verdict is confirmed.
Hover over a tracing to follow its reading. On touch screens, double tap a point to inspect it; tap outside the trace to dismiss. Swipe normally to scroll. The pin saves a reading in the notebook. Keyboard users can focus a trace, press Enter and use Left/Right to move the marker; Escape clears it.
Rhythm-focused dossiers omit the structural-pathology answer. Other dossiers use clinical context as well as waveforms, because some pressure patterns are not diagnostically unique.
After the case is resolved, hovering or double tapping any ECG or pressure trace explains the selected segment. These explanations follow whichever view is shown: the original case or the treated outcome. The outcome is an authored teaching snapshot, not an open-ended prediction of every possible treatment combination.