Under Fire!

The player would select display options and game scale at the start of play (the map was divided into squares, which could represent a variable number of metres per square, selected by the player at the outset of the game). The display as very simple, with units represented by crude tank, halftrack, or soldier icons. The display was a four-color output for the IBM PC and 16-color for the Apple II. A scenario and map were selected (with only three choices of each, for a total of nine combinations to choose from).

However, forces were randomly selected for each nationality, and the player could also choose to either attack or defend, providing even more diversity to gameplay. The player also had the option of playing either a human opponent, or against a computer opponent.

William Harrington of Computer Gaming World in 1985 called Under Fire! "highly playable" and predicted that the ability to construct scenarios would keep the game "on the cutting edge of computer war gaming in months and even years to come". While noting slow performance on the Apple II, it concluded that the game was "a must for Apple computer wargamers". The magazine in 1987 described it as "conceived in flexibility and designed to improve with future expansion".

A overview in the magazine that year of squad-level games approved of the graphics and documentation, and described Under Fire! as "exceptional in its versatility" but difficult to learn as a result. An overview of World War II simulations in the same issue rated the game four out of five points. A 1993 survey of wargames gave the game two-plus stars out of five, stating that "it does show its age".