Unofficial fan guide · launch week
Intravenous 3
A free standalone prologue to Intravenous 3 — two missions as Gideon, built on a deeper stealth sandbox. Full game hits Q2 2027.
Start with these3
Borderline release time
Free on Steam October 2 — here is what unlocks and when.
Read →Updated 2026-10-01Borderline getting started
Play quiet first. The prologue is one long tutorial you can ghost.
Read →Updated 2026-10-01Stealth systems
Noise radius, alertness, stress — the new detection math explained.
Read →Updated 2026-10-01Intravenous 3: Borderline unlocks on Steam on October 2, 2026 — free for everyone, no strings attached. It is a standalone prologue that puts you in Gideon's shoes for two full missions and previews every system the full game is built on.
This site is a field manual for both releases: Borderline, which lands in days, and Intravenous 3, which arrives in Q2 2027 with Steve and Sean on the run.

The short version
- Borderline is free and standalone. You do not need any other Intravenous game to play it.
- Two complete missions, built as a showcase for the deeper stealth systems coming to Intravenous 3.
- The playtest already happened — more than 5,000 players broke it for a week, and the developer fixed 100+ bugs before release.
- The full game is separate. Intravenous 3 is a full release coming in Q2 2027; Borderline is the opening chapter of Gideon's story, not a slice of the main campaign.
New to the series?
The three-line version: Intravenous 1 was Steve Robbins' one-man revenge story against the junkies who killed his brother. Intravenous 2 paired him with Sean, an engineer with a bullet-time problem and a kidnapped father. Borderline follows Gideon — a mercenary both games left for dead — and the full game puts Steve and Sean back in the crosshairs of a manhunt.
You can start with Borderline without touching the first two games. The prologue introduces its cast on its own terms.
What this site covers
Guides, systems breakdowns, and launch intel — sourced from the official Steam pages, developer devlogs and news posts, never invented:
- Release & unlock — dates, countdown and how to get Borderline the moment it goes live.
- Getting started — the approach we recommend for your first hour.
- Stealth systems — the three-factor noise model from the developer's own devlogs.
- Story & characters — who Gideon is, and how the series got here.
Browse by topic6
Movement & prone
Prone with full kit, vault and climb almost everything.
Read →Updated 2026-10-01Combat & gear
Kill, choke or pickpocket — then decide how loud to get.
Read →Updated 2026-10-01Story & characters
A dead man walking: Gideon's revenge and how it ties the series together.
Read →Updated 2026-10-01Borderline missions
Two full missions, 5,000 playtesters and 100+ bugs fixed before launch.
Read →Updated 2026-10-01Intravenous 3 (full game)
Steve and Sean return: the full game's features and Q2 2027 window.
Read →Updated 2026-10-01Borderline FAQ
Free? How long? Achievements? Progress carry-over? All answered.
Read →Updated 2026-10-01