Looks like the creators of Duke Nukem 3D have been hard at work on an… unusual game.

Ion Maiden is an FPS built using the Build Engine, an unusual piece of tech that was used to create a few well regarded FPSs in the nineties, like Blood, Shadow Warrior, and Duke Nukem 3D. That means it looks like a product of its time (with a few modern tweaks like physics,) and for those of us who grew up with the 2D-ish aesthetic, Ion Maiden should be a real trip down memory lane.

According to 3D Realms, “We’ve spent a lot of time tinkering under the hood to take advantage of new technology and techniques. Bigger levels, hundreds of new colors, and morphing maps that transform mid-level are all just a few of the advancements made to the engine.”

Ion Maiden is unabashedly old school, eschewing modern cover systems and recovering health in favor of more old school mechanics like fast paced running and gunning. You can see the game in glorious nineties action here:

As it says on Ion Maiden’s Steam page, “Her journey will leave trails of blood and gore in huge, multi-path levels filled with those famous colorful keycards and plenty of secrets and Easter Eggs to discover behind every corner.”

Sounds like the nineties are back with style.

Ion Maiden is in early access now with a special “Preview Campaign.” 3D Realms plans to push out more content as a full release date gets close.

We’ll keep you posted on this one.