Eternity Engine

ETERNITY ENGINE

You started with a hand crank. It is now using your serial number.

Eternity Engine is an incremental / idle game about building a power source that outgrows the planet, then the star, then the universe. It starts as a single crank and ends somewhere much stranger.

**100% AI-generated - The code, the writing and the sound were all made with AI. I'm actively developing it and I read every piece of feedback. Tell me what's fun, what's broken, and what you want added. **

 What you'll do

• Build the Engine - Nine generator tiers, from Hand Cranks and Solar Arrays up to Antimatter Reactors and Dyson Swarms, plus upgrades and milestone multipliers.
• Ascend - Collapse your reality for Eternity Cores. Spend them on permanent research, or keep them for a bigger multiplier. Every order of magnitude you push before collapsing is worth more.
• Trade on the Cosmic Exchange - Fabricate materials, ride a volatile market, and fill contracts for five factions. One of them is [REDACTED].
• Run the Quantum Reactor - Stake your Energy on risky reactions and lock the needle in the calibration window. It won't make you rich. It's how you get the rarest resources.
• Build the Eternity Complex - Seven sections assemble in real time, even while you're away.
• Transcend - There is a second layer of prestige, and an answer to give when something asks what you intend to do.
• Take on Challenge Runs - that strip away what you rely on, and answer **anomalies** that appear on the Engine panel.

 Features

- Offline progress and a "While you were away…" report

- An Archive tab where you can replay every transmission

- Dynamic sound that changes as the Engine escalates (mute with **M**)

- Number notation options: standard, scientific and engineering

- Save export and import: back up your save code before clearing your browser

- Phone and desktop friendly, with full-screen support

- Reduced-motion support

 Controls

| Key | Action |

| **C** / **Space** | Crank, or lock the reactor needle |

| **B** | Buy the best-value generator you can afford |

| **1 2 3 4** | Buy ×1 / ×10 / Next milestone / Max |

| **G U A E R X T K V S** | Switch tabs |

| **N** | Cycle number notation |

| **M** | Mute |

| **?** | Show all shortcuts |

Click the game once so it receives keyboard input.

Tips

- Check the NEXT: line on the Engine tab for your closest milestone.

- Pushing further before you Ascend almost always pays more than Ascending the moment you qualify.

- Anomalies last about 15 seconds. They're never required, but they're worth grabbing.

Saving

Your progress is stored in your browser. Use **Stats → Export** to copy a save code before clearing site data or switching devices.

Feedback

This is a work in progress and it's changing based on what players tell me. Bugs, balance complaints, feature ideas and "this part was boring" are all welcome in the comments below.