is a 1989 computer wargame designed by Gary Grigsby and published by Strategic Simulations.

is a computer wargame that simulates historical and hypothetical conflicts from 1973 onward.

[1][2] Grigsby revised the system to support modern warfare scenarios; the previous games had been set during World War II.

[3] In Computer Gaming World, Buddy Knight wrote, "All things taken together, Overrun!

's Robin Hogg wrote that it "[s]lips up in the possibilities of modern combat but despite this [is] an extensive and very comprehensive wargame.