Defcon 5 
Combining first-person shooters and strategic simulation around a specific location is a brilliant concept. Defcon 5 implements it in an extremely flawed way, though enough that you can see what works.
Tagged: 90s
Defcon 5
Despair 
Feel like everything sucks? The sadistic slapstick stress relief in Despair might leave you even more depressed.
Dig up old custom worlds in the groundbreaking Museum of ZZT 
Kudos to the recently unveiled Museum of ZZT, which goes above being a game repository and shows off new ways to explore user-created content.
Dinosaur Predators 
As an educational tool about dinosaurs, this game is limited by its strategic shortcomings. As a strategy game, it’s held back by its adherence to science.
The dirty secret of Secret Writer’s Society 
A bizarre story about a writing program that was reportedly sabotaged by a rogue programmer and the questions that raises about educational software.
Dominus
From the highest vantage point to a small dungeon, Dominus finds a plethora of ways to wage war and then never gives you the time to try them.
Drowned God: Conspiracy of the Ages 
The incomprehensible mythology of Drowned God celebrates the seductive power of conspiracy theory logic to tame the unexplainable.
Duracell: Run the Bunny
When putting together a lengthy, interactive ad for batteries, at least make it functional.
Eastern Mind: The Lost Souls of Tong-Nou
Osamu Sato’s magnum opus is unequivocally the strangest game ever made. Behind its madness, you’ll find a metaphorical tale of rebirth and self-actualization. I love that something like this was made.
Econ’s Arena
This lovingly cluttered, colorful strategy game based on the classical elements needs more focus to deliver a endgame as compelling as it looks.