In video games, rushing is analogous to the human wave attack in real-world ground warfare, in which speed and surprise are used to overwhelm and/or cripple an enemy before they achieve effective buildups of sizable defensive and/or expansionist capabilities.
In the game StarCraft, a Terran player may use a Marine rush (or in some cases an SCV rush), a Protoss player may use a Zealot rush, and a Zerg player may use the infamous Zergling rush. The units used were almost always cheap, easy to produce, and weak compared to other units.
