Dangerous Dave series
The Dangerous Dave series of games was created by John Romero in 1988 when he created the original Apple II Dangerous Dave game for UpTime Disk Monthly. In 1990, for the premiere issue of Gamer's Edge Disk Magazine, he ported Dangerous Dave to the PC and polished the game even more - this version being the one most people had played. In 1991 id Software created a sequel to Dangerous Dave subtitled "The Haunted Mansion".
After the first 3 original Dangerous Daves, Softdisk Publishing created the rest of the series in-house although without Romero in a designer role.