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CVL CORE Substrate v3.4.0|Copyright CVL CORE 2026
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Live Testbed Client & Downloads

The CVL CORE Live Testbed is an open evaluation client built with the Unity SDK. Rather than running an offline visualizer, this pre-built client establishes a direct, thread-decoupled TCP connection to a live, authoritative Linux VPS server instance.

Anyone can download the client, log in without credentials, inspect real-time server vitals, and observe authoritative spatial kinematics alongside hundreds of concurrent actors.

Evaluation Server Topology

Section titled “Evaluation Server Topology”

The public VPS instance runs a continuous authoritative simulation loop designed to demonstrate steady-state load handling.

Parameter Configuration Engineering Behavior
Server Target Public Bare-Metal VPS Authoritative headless Linux instance running the 30Hz spatial loop.
Cluster Capacity Ceiling 400 Total Entities Hard-capped by MAX_DEMO_CAP_EIDS = 400 to prevent socket degradation.
Dynamic Bot Balancing Active Synthetic Swarm Automated background bots continuously backfill empty slots up to the 400 ceiling.
Human Admission Priority Dynamic Slot Reclamation Incoming human connections automatically evict active synthetic bots in real time.
Egress Broadcast Cadence 15Hz Conflation Server physics tick at 30Hz while kinematics stream at 15Hz to reduce bandwidth.

Dynamic Population Balancing

Section titled “Dynamic Population Balancing”

The live instance maintains an aggregate load of 400 entities. If 20 human testers are online, the cluster runs 380 autonomous bots. As additional human testers connect, the server’s admission pipeline reclaims slots from synthetic actors without requiring server restarts or dropping simulation ticks. When testers log out, the swarm generator scales back up to maintain continuous saturation benchmarks.

Client Telemetry & Diagnostic HUD

Section titled “Client Telemetry & Diagnostic HUD”

The testbed client includes an integrated diagnostic overlay (toggle via F3 or top-left HUD) rendering live engine metrics streamed directly from the wire:

  • Round-Trip Time (RTT) & Jitter: Measures millisecond socket latency and jitter variance calculated via continuous 1.0Hz ping packets.
  • Kinematic Velocity: Tracks grounded velocity against the server’s role-aware speed limits.
  • Server Tick Rate & Vitals: Displays real-time server frame times and health updates received over the out-of-band vitals stream.
  • 133ms Ring Buffer Smoothing: Visualizes how the client’s 8-slot circular snapshot buffer absorbs network packet latency and eliminates micro-stuttering across remote proxies.

Download & Launch Instructions

Section titled “Download & Launch Instructions”

1. Download the Build

Section titled “1. Download the Build”

Download the standalone executable package for your platform:

2. Connect to the Live Cluster

Section titled “2. Connect to the Live Cluster”
  1. Extract the downloaded archive to a local folder.
  2. Launch CVL_Core_Testbed.exe (or the Linux executable equivalent).
  3. The client connects automatically to the public evaluation VPS endpoint.
  4. Input a display name on the login prompt and click Connect.
  5. Once authenticated via the 4-stage admission gateway, your entity instantiates at an authoritative safe spawn coordinate.

3. Controls & Diagnostics

Section titled “3. Controls & Diagnostics”
  • W / A / S / D: Local character translation governed by 30Hz client telemetry sampling.
  • Spacebar: Grounded vertical jump verified against the server-side vertical height limit.
  • C Key: Toggles the Spectator Free-Fly camera to inspect swarm density across the zone.
  • F3: Toggles the diagnostic telemetry overlay.
  • ESC / Logout: Dispatches an inline disconnection command, freeing the entity slot immediately for slot recycling.

Host Your Own: Local Engine Alpha

Section titled “Host Your Own: Local Engine Alpha”

Looking to run the authoritative spatial engine on your own workstation or bare-metal cluster?

Access to the standalone CVL CORE Server Runtime (allowing developers to run the Python/C spatial kernel locally on 127.0.0.1 and connect custom Unity or C# clients) is currently entering Closed Alpha.

To register for the developer evaluation queue:

  1. Join the CVL CORE Discord Community.
  2. Request an evaluation seat in the #alpha-access channel.
  3. Once approved, you will receive the bare-metal server package, local configuration files, and Unity SDK integration package.