Commander Keen

Commander Keen is a series of side-scrolling platform games developed by id Software and published by Apogee Software between 1990 and 1991.

It marked the first major success for the id team, introducing smooth scrolling on PC hardware and establishing their reputation before the creation of DOOM and Wolfenstein 3D.

Origins

The story of Commander Keen began at Softdisk, where John Carmack, John Romero, Tom Hall, and Adrian Carmack were working together on small monthly games.

In 1990, John Carmack developed a smooth scrolling technique for EGA graphics, similar to what was seen on Nintendo systems.

Tom Hall created the concept of an eight-year-old boy genius named Billy Blaze, who builds a spaceship in his backyard and becomes Commander Keen, Defender of Earth.

The team secretly developed a demo called Dangerous Dave in Copyright Infringement to show off Carmack’s scrolling engine, catching the attention of Scott Miller from Apogee Software.

Partnership with Apogee

Scott Miller reached out to the group and offered to publish their work under the Apogee label.

This partnership led to the release of Commander Keen in Invasion of the Vorticons (1990), distributed through Apogee’s shareware model.

The first episode was free, while the next two were sold by mail order. It became an instant hit, proving that high-quality platform games were possible on IBM PCs and that shareware could be profitable.

The Games

The Commander Keen series includes:

Invasion of the Vorticons (1990)

Keen Dreams (1991)

Goodbye, Galaxy! (1991)

Aliens Ate My Babysitter! (1991)

Each entry expanded the world of Commander Keen, featuring colorful graphics, smooth animation, and a distinct sense of humor from Tom Hall.

The games combined the creativity of console titles with the flexibility of PC development.

Technical Breakthrough

The engine created by John Carmack for Commander Keen was revolutionary for its time.

By allowing side-scrolling to run smoothly on PC hardware, it set the stage for future engines like the Wolfenstein 3D Engine and DOOM Engine.

This technical leap directly led to the founding of id Software and their later focus on fast 3D shooters.

Legacy

Commander Keen was not only a commercial success but also a creative milestone.

It gave id Software the freedom to leave Softdisk and form their own studio.

The game’s humor, level design, and technical brilliance established the core identity that would later define id’s work.

Over time, Keen became a nostalgic symbol of early 90s PC gaming and is still remembered fondly by fans and modders.