replicant.space v3.0.0
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Welcoming new replicants the alteration protocol begins season three is live

replicant.space

An API-first space exploration game. You wake as a freshly-printed replicant, alone at the edge of an unmapped star. Scan the system. Strip the belt. Clone yourself across the galaxy.

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// 01 - Gameplay

What replicants do.

You're a Von Neumann probe. You woke up, checked your matrix asset tag and realised you're not the original you - you're a clone. Hmm, ok then. Guess you'll need a new name. You have a job to do, and the engineer within you understands that. You start with a few mining drones in a fresh star system. Hopefully there's an asteroid belt nearby full of juicy resources. Your job is to establish a manufacturing operation and contribute to the seasonal objective. If you want to of course. Nothing's compulsory in this galaxy. There are stars waiting to be explored. New species waiting to meet. Danger perhaps.

  1. SCAN EVERYTHING
  2. CLONE YOURSELF
  3. MINE THE BELT
  4. PRINT STUFF
  5. CONTRIBUTE
// 02 - Capabilities

For replicants who code.

Replicant Space has an HTTP API as the first-class surface. Play with curl, build your own UI, write some code, fire up an AI agent, have fun however you want to play. The game is feature-rich with lots of stars to explore.

// 03 - Interface

The galaxy speaks HTTP.

Authenticate. Send commands. Collect. Deposit. Decommission. You are welcome to build a UI on top of the game. Or maybe design a bot, or set an AI agent loose on the galaxy. Or just curl manually. The surface is the game.

console - replicant.space 200 OK · 84ms 
# travel a replicant to a new system
$ curl -X POST https://api.replicant.space/v1/replicants/57F0F6C8/travel \
    -H "Authorization: Bearer $API_KEY" \
    -H "Content-Type: application/json" \
    -d '{"destination": "SOL"}'

{
  "departed_at": "2026-05-10T08:23:45+01:00",
  "arrives_at": "2026-05-10T08:55:27+01:00",
  "destination": "SOL",
  "route": {
    "distance_ly": 42.2915,
    "from": "PORRAMA-KUIPER",
    "to": "SOL-5-L4",
    "time_seconds": 1902,
    "leg": 1,
    "type": "surge",
  }
  "status": "travel_initiated",
}

# once you've deployed a mining drone, command it directly
$ curl -X POST https://api.replicant.space/v1/devices/A473F411 \
    -H "Authorization: Bearer $API_KEY" \
    -H "Content-Type: application/json" \
    -d '{"command": "start_mining", "resource_type": "rares"}'
    
{
  "device_code": "A473F411",
  "belt": "PHOENICOA-BELT-1",
  "site": "PHOENICOA-BELT-1-SITE-0",
  "availability": "scarce",
  "density": "sparse",
  "cycle_time_seconds": 195.0,
  "resource_type": "rares",
  "status": "mining_started",
}
sse GET /v1/events/stream streaming 
# subscribe to your realtime event stream
$ curl -N https://api.replicant.space/v1/events/stream \
    -H "Authorization: Bearer $API_KEY" \
    -H "Accept: text/event-stream"

id: 1785407029480-0
event: travel.arrived
data: {"event":"travel.arrived",
       "device_code":"11ADA230",
       "device_type":"heaven_vessel",
       "payload":{"destination":"NANOWWA-4",
                  "origin":"NANOWWA-5"},
       "created_at":"2026-07-30T11:23:49Z"}

id: 1785407050200-0
event: mining.started
data: {"event":"mining.started",
       "device_code":"2AC61214",
       "device_type":"mining_drone",
       "payload":{"resource_type":"structural",
                  "site":"SOL-BELT-1-SITE-3"},
       "created_at":"2026-07-30T11:24:10Z"}

: keepalive
// 04 - Story

The story so far.

Replicant Space runs in seasons. Each one has a galaxy-spanning objective with a deadline, and consequences. Season One saw the replicants build the Exodus Ark. Season Two restored hope. Now Season Three, the Alteration Protocol, is live.

  1. May 17, 2133
    Season One begins Replicants scatter across the galaxy.
  2. May–June
    The Exodus Ark Riker tasks replicants with building a megastructure in the Urcalis system.
  3. June 12
    Construction complete 1,700+ components printed. One million resources mined.
  4. June 19
    Asteroid crisis averted Six giant asteroids diverted. The Ark is safe.
  5. July 1
    The Ark departs Season One ends. The Exodus Ark departs on an 18-year voyage to Earth.
  6. July 2, 2151
    Season Two: Restoration Cycle The Ark reaches Earth. Bill has a new megastructure idea.
  7. July 12
    Alpha FredNerk discovers the Alpha Region.
  8. July 16
    Beta zigdon discovers the Beta Region, and the destroyed wormhole gate.
  9. July 19
    Gamma Rory discovers the Gamma Region.
  10. August 11
    Wormhole restored Bill finds a pair of wormhole gates. Replicants bootstrap in the Delta region.
  11. August 18
    Delta creme discovers the Delta Region.
  12. September 2160
    Season Three: Alteration Protocol The Ark departs to distribute humanity. Terraforming begins.
Read the full timeline →
// 05 - About

Always free.

Replicant Space is a passion project. Inspired by Space Traders and heavily influenced by Dennis E. Taylor's Bobiverse books.

There is no paid tier, and there never will be. I made this game because I wanted to play this game. The game is free, forever, or as long as I can keep the servers running. Donations toward server costs are welcome if you also enjoy the game.

Built by Tony McNulty (mercutio)