DoDonPachi

DoDonPachi is the game that named a genre. Cave's 1997 shooter is the moment danmaku - bullet hell - became a design rather than a difficulty setting, and every modern bullet-hell game traces its structure here.

The innovation is density with intention. Enemies fill the screen with patterns that are not random but deliberately sculpted: a ring opens a gap, a wall collapses into a channel, and the game expects you to read the shape rather than dodge the bullets. On top of that sits the combo system - keeping a chain of kills alive by hitting something new before the last one dies - which turns the whole game into a score-attack rhythm challenge. You choose between three ships, each with a focused shot and a wide shot, and the difference between holding the focus button and releasing it is the entire defensive mechanic. The name comes from the final boss, a massive mechanical bee hive. It spawned a direct sequel and a long series, and it remains the genre's reference point.

• ▸The game that defined the bullet-hell genre
• ▸Deliberately sculpted bullet patterns rather than random density
• ▸A combo chain system that rewards continuous kills
• ▸Focused and wide fire modes as the core defensive mechanic