Doom · Prima Games · 1994 · Jonathan Mendoza
Prima Games' official Doom guide arrived as shareware copies of the game were circulating in millions of office networks and dorm rooms, providing level maps and secret locations for a game whose non-linear secrets were genuinely difficult to find without assistance.
The Prima Games Doom strategy guide, written by Jonathan Mendoza and published in 1994, appeared in the context of a game that had been distributed as shareware — the first episode freely downloadable — before the full game was commercially available. By the time the guide appeared, a significant community of players had already been playing Episode 1 extensively and were deeply familiar with its secrets. The guide's value lay primarily in documenting Episodes 2 and 3 of the registered game, which the shareware-only community could not yet access. Mendoza's approach was comprehensive for the genre: level maps annotated with secret locations, monster counts per level, item locations, and tactical guidance for the game's three difficulty levels. The guide was one of Prima's early major successes in the PC gaming market, establishing a pattern the company would follow throughout the decade.
Remembered as the first major strategy guide for the genre-defining FPS, produced during the moment when Doom was transitioning from shareware curiosity to cultural phenomenon.
Doom's distribution model — Episode 1 free, full game for purchase — created an unusual market for a strategy guide. The shareware episode had been played by an estimated ten million people by the time the full commercial release arrived, many of whom had explored its twenty-seven levels exhaustively. A guide covering Episode 1 in detail was selling information to an audience that mostly already had it. Mendoza's guide navigated this by treating the Episode 1 content as groundwork — establishing the documentation format — while placing its real value in the Episodes 2 and 3 coverage that the shareware community had not yet been able to access.
The secret locations were the guide's sharpest competitive advantage. Doom's secret rooms were hidden behind walls that appeared solid, accessible only by shooting at or pressing against surfaces that gave no visual indication of being passable. Finding them without a guide required either systematic wall-pressing across every level or familiarity with Doom's design conventions. The guide's annotated maps transformed this opaque discovery process into a checklist, which appealed to completionist players regardless of how much they had already explored.
The Doom guide was an early marker of Prima Games' strategic decision to pursue the PC gaming segment aggressively. While Brady Games dominated Nintendo-licensed guide publishing, Prima identified PC gaming — particularly the shareware and mail-order FPS market that id Software had helped create — as an underserved niche. The Doom guide was followed by guides for Heretic, Hexen, Quake, and other id-adjacent titles, building Prima into the default publisher for id Software games in the guide market.
The tactical sections in the Doom guide — advice on encounter management, resource conservation across levels, weapon selection for specific enemy types — established a convention for FPS guide writing that Prima's subsequent titles followed. The advice is often rudimentary by modern standards, but in 1994 it codified an approach to FPS strategy documentation that had no real predecessor. Doom's guide had to invent its own format because the genre was new enough that no template existed.