Game: Sigma Impact

Sigma Impact Free Download

About This Game

Sigma Impact is a physics-based combat roguelite set in a dungeon of glass. Choose from a set of procedurally generated weapons and smash your way through multiple rooms and enemy encounters to face-off with the final boss. Pick up new, more powerful weapons along the way, and choose your perks to augment and synergize with your favorite weapon and play-style.


  • Emergent, physics-based combat
  • 2 player local coop/pvp
  • Dynamic music, generated in real time that reacts to gameplay
  • A unique art style with unlockable color “moods”
  • 8 weapon types with unique play-styles with more in development
  • Customizable controls for gamepad or keyboard and mouse (gamepad is recommended)
  • Procedural generation and 9 random perks to choose from to make each run unique
  • Starting hub with training rooms and a sport/combat arena (for pvp or horde mode)
  • Highscore table for combo/scoring system and speedrun timer
  • NewGame+
  • “Chill mode” difficulty option for a more relaxed play through

Sigma Impact is a hobby project by a solo indie dev, small in scope but made with passion. What started as a small prototype during Covid lockdowns slowly turned into my first complete gamedev project that I could share with others. Over time I’ve kept the scope small (still just a handful of enemy types and only a few basic room types and level generation, a run can take around 10 minutes), but that’s allowed me to really focus in and iterate and playtest and polish the things that make it stand out. The feeling of movement, weapon momentum, the enemy AI that leads to some really intense moment-to-moment reactive battles, singing along to weird little tinky music system that’s basically me “generatively” jamming out to my favorite Bach prelude… Honestly I just love making this thing. Even if it doesn’t find the popularity that lets me quit my day job I’ll still be playing and tinkering away on it.

Expect things to be a little rough around the edges, but I’m always in our Discord and love getting bug reports. Thanks for giving my game a look šŸ™‚

Title: Sigma Impact

Genre: Action, Indie


John Bishop


John Bishop

Release Date: 11 Aug, 2021


ā€œThis game is the absolute epitome of satisfaction oh my god. There’s your Steam storepage quote.ā€

ā€œQuite good! Refreshingly fresh combat, simple inputs, very deep outputs. [..] Highly recommended!ā€
Jake Kazdal – 17BIT

System Requirements


    • OS: Windows 7, 8 or 10 x64
    • Processor: Intel or AMD Dual Core CPU
    • Memory: 512 MB RAM
    • Graphics: (Integrated): Intel HD Graphics or AMD (formerly ATI) Radeon HD Graphics (Discrete): Nvidia GeForce 9600 GT or AMD Radeon HD 2400
    • DirectX: Version 9.0
    • Storage: 64 MB available space

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