Celebrate Doom's 21st birthday with 'never-before-seen' development art

Iconic shooter Doom turned 21 this week, but there's one thing to do before it goes for a wild night out on Phobos. Yes, it's time for an "awwww-mommmm" gander at some baby pictures!

Designer John Romero took to Twitter to reveal an album's worth of "never-before-seen" development art ... which technically makes them less baby pictures and more fetal scans.

Anyway... we've bundled them all into a gallery, so gather round, everyone! D'awwwww! Now what about that next shooter, Mr. Romero?

PS: For more on info on what you're looking at, have a peek through John Romero's Twitter feed.

[Images: John Romero]