Screenshots
Watch trailer on Steam ↗Oort Protocol: Perihelion
Tuukka Sarkki · Published by Team Oort · Official site ↗
Last updated 28 Sept 2026
Command 4 operators in a hardcore tactical roguelike set in 2476. No tutorials. No hand-holding. Decipher a system-wide conspiracy through ASCII tactical combat and deep terminal interrogation. Every choice persists.
RPG, Simulation, Early Access · More free games
Command 4 operators in Oort Protocol: Perihelion, a hardcore tactical roguelike set in 2476. Every choice you make will persist as you navigate the system's secrets through intense ASCII battles and intricate terminal interrogations.
About this game
Commander
The system is waiting for you to take control over OORT PROTOCOL: PERIHELION missions, leading a squad of four through the tensions leading the Solar System towards war, as the tension between The Planetary Alliance and Imperial Earth grows.
Every action counts, every decision has downstream effects. Gather intel to succeed. And survive.
After the first mission, further missions coming in June (EA), full protocol available in Q4
Good luck, Commander
HQ Out
System Requirements
Will my PC run this? →Minimum
- OS *: Windows 7/8/10/11 (64-bit)
- Processor: Intel Core 2 Duo E8400 / AMD Phenom II X2 550
- Memory: 2 MB RAM
- Graphics: Intel HD Graphics 4000 / AMD Radeon HD 5450
- Storage: 500 MB available space
Supported Languages
Latest news
Patch NotesOfficial
Terminal upgraded to v1.02
Commander. Based on your communications we have rolled out terminal v.1.02 - Terminal scaling - Mission status retained while you quit through the terminal We are working on opening the sound channel as per request. More on that soon. Now get out there and get that intel. HQ Out.Read full article on Community Announcements (Massatuho)Patch NotesOfficial
Terminal Upgrade
Commander, Your terminal has been upgraded. Look for intel on the field - a veteran like you should identify the patterns. HQ Out.Read full article on Community Announcements (Massatuho)Patch NotesOfficial
PERIHELION DEMO RELEASE AND BUILD 1.01 PATCH NOTES
What's in the demo:Full tactical mission: Aurora Station extraction op4-member squad creation with faction choice (Imperial Earth / Planetary Alliance)Role-based squad building: Assault, Sniper, Medic, Tech, HeavyEquipment loadout customizationTurn-based tactical combat with fog of war, cover system, and environmental effectsFormation movement and individual squad controlMulti-level station (ground floor + lower level)NPC interactions: security checkpoint, interrogation intel, civilian encountersTerminal hacking systemMission objective chain leading to target extractionBuild 1.01 changes:Significantly improved tactical phase performance — formation movement and enemy turns are now much snappierRebalanced Action Points across all squad roles (+2 AP baseline)Fixed mission flow after failed missionsFixed formation movement stalling when squad leader is killedFixed terminal access on lower levelCleaned up interrogation sequence pacing — player now controls dialogue flowVarious deprecated code cleanup for stabilityFeedback welcome — this is an active work in progress.Read full article on Community Announcements (Massatuho)
