Reactor Test Game Guide: Basic Control Room operations

The Core sits inside the Core Chamber and responds to whatever you do at the Control Room consoles. Your main jobs are starting it up, watching the temperature, managing coolant, and shutting it down when things go wrong.

1. Start the reactor Use the startup controls on the Control Room console to bring the Core online. There is a small natural chance of a Startup Failure every time you do this; it is built into the game and not caused by anything you pressed wrong.
2. Watch the temperature Keep your eyes on the Control Room readouts at all times. A rising temperature that hits the yellow zone is a warning; letting it climb into the red means trouble is coming fast.
3. Run the coolant The coolant pumps regulate how much heat the Core sheds. Too little cooling and the temperature climbs toward meltdown; too much and you risk dropping it into a freezedown.
4. Execute a shutdown When a meltdown is active and the temperature is below 2650°C, you can attempt a controlled shutdown from the console to stop the reactor safely.
5. Pick your team Join the Reactor Testing group on Roblox to unlock the Reactor Operations and Maintenance employee teams. Every other team is available to anyone through the team select menu at the bottom right of the screen.

Meltdown is the most common disaster in RTG because it only takes inattention or one person sabotaging the coolant. It moves through four stages, and your window to stop it closes quickly.

1. Stage 1 yellow warning zone — Boost cooling immediately. The reactor can still be pulled back at this point without a shutdown.
2. Stage 2 red danger zone — Attempt a shutdown sequence from the Control Room. The temperature must be below 2650°C for the shutdown to be accepted.
3. Shutdown failure possibility If the shutdown fails, meltdown resumes as normal. Head for the bunker without delay.
4. Stage 3 thermal runaway — The Core is no longer controllable by standard methods. A countdown to detonation starts and facility blast doors enter evacuation mode.
5. Stage 4 detonation — The Core explodes and kills anyone remaining in the main facility. Get into the blast bunker before the countdown ends, or reach the Off-World Evac Zone, to survive.

Self-Destruct is a manual, controlled demolition — not an accident. Because it requires a stable Core, you need to set that up before you touch the console. Once the sequence starts, it cannot be cancelled.

1. Stabilize the Core first Make sure temperature and pressure are at normal operating levels. An active meltdown or freezedown locks out the Self-Destruct console entirely.
2. Reach the console The Self-Destruct emergency console is located in the Control Room or the Security sector.
3. Initiate the sequence Input the required security code or turn the dual key switches. A timed countdown begins and facility-wide alarms activate.
4. Evacuate during the countdown Non-essential doors switch to evacuation mode. Use that window to reach the blast bunker or the Off-World Evac Zone before the timer hits zero.
5. Detonation Anyone outside a designated shelter when the charges detonate is eliminated instantly, and the server resets the facility shortly after.