One Must Fall 2197: Singularity is a free remake of One Must Fall 2097, the cult-classic 1994 one-on-one fighting game built around giant piloted robots (HARs). It keeps the feel of the original—motion inputs, spacing-heavy footsies, throws, and signature specials—while modernizing the package with HD art, remastered menus, and optional contemporary fighting-game systems layered on top of the classic ruleset.

If you grew up with OMF’s crunchy metal-on-metal hits and over-the-top finishes, this is the same game at its core—rebuilt for today, and running on the open-source foundation of OpenOMF.

Classic combat, rebuilt (with brutal finishers)

Every HAR comes equipped with a full moveset: punches, kicks, throws, and special moves performed via joystick-style motions. Rounds are fast, readable, and unforgiving—positioning matters, and a single mistake can swing momentum hard.

And yes, after the final round, you can cap a beaten robot with a classic finishing move: SCRAP or the more spectacular DESTRUCTION.

Modes: plenty to do even in single-player

Singularity includes a strong set of modes aimed at both nostalgia runs and serious lab time:

  • Tournament (career mode): Create a pilot, enter one of eight events, and climb a ranked ladder for prize money. Between fights, spend your earnings in the mech lab on repairs and upgrades (arm/leg power and speed, armor, stun resistance), pilot training, paint jobs, and even entirely new robots. Losing hurts: it can cost you repairs and momentum in your run.
  • Arcade: Pick a pilot and HAR, fight your way up the ladder, and face Major Kreissack. Completing Arcade unlocks your pilot’s ending.
  • Single Match / Versus: Quick fights against the CPU, or local two-player on one Mac using keyboard or gamepads.
  • Online Versus: Steam friend invites and peer-to-peer fights with rollback netcode (note: not available on macOS at the moment).
  • Training: A feature-rich practice mode with a dummy that never goes down, behavior options (stand/crouch/jump/block/fight back), position resets, input history, and hitbox visualization.

Robots and arenas: massive roster, hazardous stages

The full lineup of the original eleven HARs returns—Jaguar, Shadow, Thorn, Pyros, Electra, Katana, Shredder, Flail, Gargoyle, Chronos, and Nova—joined by ten new robots with their own special moves, supers, and story flavor: Mantis, Bulwark, Vise, Hornet, Viper, Lodestone, Glacier, Auger, Banshee, and Riptide.

Stage variety is similarly expanded. You’ll fight across fifteen arenas (five classic plus ten new), each with distinct hazards—everything from molten spear-like threats and drone raids to lightning strikes that punish predictable movement. Some robots and paint finishes are unlockable through play, giving single-player progression real bite.

Classic vs modern rules: tune the experience

Under the hood, fights run on OpenOMF’s faithful recreation of the original game’s timing, damage, moves, and AI behavior. On top of that, Singularity optionally adds modern fighting-game structure:

  • Three-stock super meter
  • EX special moves
  • Supers
  • Counter hits

Prefer the 1994 feel? You can toggle these additions off in the gameplay settings and stick to classic rules.

Difficulty and pacing are highly configurable: the CPU has seven difficulty levels (from PUNCHING BAG to ULTIMATE) and the game speed offers eleven settings, which is great for easing in—or for recreating the exact tempo you remember.

Controls, accessibility, and extras

Singularity supports both keyboard and gamepads, with fully remappable controls and button prompts for Xbox, PlayStation, and Steam Deck layouts. There’s also an optional MODERN control scheme that adds a one-button SPECIAL input—useful for newcomers or for quick couch sessions.

For learning characters, the Move List is especially helpful: it will demonstrate special moves on a live robot as you browse, reducing the usual friction of memorizing motions from static text.

The game also includes an Extras section with:

  • Original screens displayed alongside their HD remasters
  • A music player for the remastered soundtrack
  • Arcade endings
  • Fight statistics tracking

macOS version notes (important)

The Mac build comes with a major caveat: it is currently single-player only. That means Steam online Versus, the Steam overlay, and Steam achievements are not available on macOS right now. Local play and solo modes are the focus for Mac users at present.

Mac system requirements

Minimum

  • Requires an Apple processor
  • OS: macOS 14 or later
  • Processor: Apple Silicon (M1 or newer); Intel Macs are not supported
  • Memory: 8 GB RAM
  • Graphics: Apple Silicon integrated graphics
  • Storage: 3 GB available space
  • Additional Notes: Single-player only on Mac. No Steam online Versus, Steam overlay, or Steam achievements. Hardware minimums are estimates.

Recommended

  • Requires an Apple processor

Built with community roots

Singularity is explicitly built on the work of OpenOMF, the open-source project that reverse-engineered and rebuilt One Must Fall 2097 over many years. The remake credits that foundation directly: the core fight logic—moves, damage, timing, and AI—comes from OpenOMF, and even the rollback netcode design follows its approach.

The project also acknowledges Rob Elam and the original teams behind OMF 2097 (Diversions Entertainment and collaborators, plus the remastered music work associated with Renaissance), as well as the community that kept the series alive long enough for a modern revival to make sense.

Verdict for Mac gamers

Even with online play missing on macOS, One Must Fall 2197: Singularity is an easy recommendation for anyone who loves fighting games, mech combat, or PC retro revivals done right. The core combat remains deliberately old-school, the single-player modes have real depth, and the option to switch between classic and modern mechanics makes it flexible for both purists and newcomers.

If you’re on Apple Silicon and want a free, feature-rich fighter with real legacy behind it, this is one to install—and to keep installed for when you want something heavier than another round of the usual 2D suspects.

Unreal port by LineCrush Games.