Screenshots
Watch trailer on Steam ↗Operation Zero
Pixeljam · Published by Pixeljam
Last updated 4 Oct 2026
Grab your biggest gun and jump into this story-driven top-down run-and-gun sci-fi arcade shooter starring the ultimate bio-engineered hero-manchild TASKILLER!
Action, Indie · More free games
Control the hyper-powered hero-manchild, TASKILLER, in Operation Zero—a thrilling run-and-gun adventure that blends top-down shooter gameplay with a gripping narrative. Dive into Pixeljam's indie take on arcade-style combat and explore vast sci-fi environments filled with danger.
About this game
Operation Zero is top-down run-n-gun arcade shooter with a sci-fi comedy edge. A mysterious and threatening artificial intelligence is spreading across New America, and only one hero has the brawn, firepower and ignorance to stop it: TASKILLER, the ultimate bio-engineered super-soldier!
You'll need the help of the GENERAL and some state-of-the-art firepower to blast your way through hordes of AI-deranged droids and drones to reach the nerve center of 8 secret bases, each more dangerous than the last.
Featuring:
Top-down run-n-gun action... fans of the late 80's and 90's arcade classics will feel right at home
Twin-Stick controls by default, but configurable to suit other styles
8 missions to take on, containing 5-7 levels each, spanning forests, secret bases and underground AI nerve centers
Arena Mode: a non-narrative "infinite" way to play - see how long you can survive against a never ending barrage of enemies
Randomly generated levels for extra replayability
Plentiful and stackable weapon powerups to form interesting and deadly combinations. Including but not limited to rapid, bounce, spread, split, explosive...
Personal drone powerups to augment your firepower
Narrative moments peppered into each level to propel Taskiller's story forward. All is not as it seems in New America....
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10 or higher
- Processor: 1 Ghz CPU
- Memory: 1 GB RAM
- Graphics: Intel HD Graphics 4000 or equivalent, Integrated cards also work
- Storage: 250 MB available space
Supported Languages
Latest news
AnnouncementsOfficial
Change Of Plans Regarding Early Access / Demo Imminent
Hello all, We've decided to not release the game into Early Access, and will be releasing the full version of the game sometime in 2025. This means we are no longer planning an episode 2, but instead we'll be launching with an additional mode of play, most likely an infinite / arena mode, for those that are not as interested in the narrative and just want to blast and dodge stuff. We'll also be releasing the demo in the next few days, ahead of Steam Next Fest. Looking forward to seeing what everyone thinks! -Miles @ PixeljamRead full article on Community Announcements (Pixeljam Games)AnnouncementsOfficial
- First Gameplay Footage Reveal -
Hello all, We're excited to reveal the first gameplay peek at Operation Zero, showing the first 2 levels of the 5-level first mission: There will be about 8 missions total for the Early Access release of the game, each with 5-8 levels. It's still a bit rough around the edges, but we're smoothing things out for the upcoming playable demo for Next Fest in a few weeks! -Miles @ PixeljamRead full article on Community Announcements (Pixeljam Games)
