About This Game

Mars is open for business.

Every corporation begins on an equal footing in Harwell, a singleplayer and multiplayer economic strategy game set on the Red Planet. Build your company, control production, and trade in a dynamic, player-driven economy where shifting supply and demand can lead to vast riches – or drive you into bankruptcy.

The goal is simple: Accumulate wealth, outmaneuver your rivals, and buy out every competitor to establish a total monopoly.

Mine. Build. Scale.

Establish the foundation of your company through mining and manufacturing.

• Mine valuable resources directly from the Martian surface

• Refine raw materials into advanced goods

• Construct and expand production lines to scale your operations

• Develop the infrastructure needed to support a growing corporation

Efficient production is the backbone of profitability – manage your resources, streamline your industry, and maximize output.

Are you Ahead of the Market?

The market in Harwell is not static, it is shaped by every player’s decisions.

• Engage in real-time trading with other corporations

• Buy low, sell high, and adapt to shifting market conditions

• Influence prices through supply, demand, and strategic action

Every transaction matters. Every decision affects the market.

Success depends on understanding timing, opportunity, and economic pressure.

Manage. Control. Defend.

Each corporation operates with its own financial system.  

• Every corporation has its own stock price, shaped by performance, debt, and market position

• Manage your finances carefully to maintain investor confidence and a strong valuation

• Buy shares in rival companies to gain leverage and push toward hostile takeovers

• Defend your own corporation by keeping your stock price high and your balance sheet stable

Outproduce your rivals – or buy them out and take everything they built. The choice is yours.

Compete. Negotiate. Sabotage. Dominate.

Direct interaction between players is key for success.

• Compete against rival corporations for resources and market control

• Use the Mars Trade Committee to influence laws, tariffs, and restrictions

• Participate in auctions for colony contracts and black market opportunities

• Engage in diplomatic strategies or disrupt your opponents when it benefits you

Victory comes not only from growth, but from how you interact with those around you.

Build the Company Your Own Way

No two corporations play the same way.

• Choose Company Traits that define your playstyle

• Build a company with strengths, weaknesses, and a unique identity

• Customize your approach to strategy, economy, and expansion

Your company becomes your identity – and your strategy defines your success.

Evolve with the Community. Expand Through Modding.

Harwell is designed to grow with its players.

• Ongoing development shaped by community feedback

• Expanding moddability as development progresses

• Endless potential for new content, systems, and experiences

Your strategies – and your creations – can help define the future of the game.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Some store assets are put together by human hands but use images generated by AI. All in-game assets, screenshots, and videos are human-made with love.

Some in-game assets are purchased from artists on itch.io, the rest are handmade.