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Simulation Game Maker: Create Your Own Sim Game

Describe the world, rules, resources, and choices you want. SoonLab turns your idea into a playable simulation game you can test, improve through conversation, and share online.

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Points based on the model's starting price will be deducted before each creation. (Actual deducted points may vary depending on generation difficulty.)

Game inspiration sources

Simulation Games Made with SoonLab

Play simulation games created with SoonLab and see how different ideas use resources, time, progression, and changing events. Choose a system you like, then build an original simulation of your own.

More Simulation Games
Make Your Game

Build a Simulation Game Around Decisions and Results

Turn an Idea into a Playable System

Explain what the player controls and what changes over time. SoonLab can turn rules, variables, and goals into a browser game you can play instead of leaving the idea in a document.

Build Your Simulation
Creating a playable simulation game from a text prompt with SoonLab

Add Resources, Time, and Progression

Create money, energy, materials, skills, reputation, population, or other values. Define how players earn, spend, lose, and improve them as the game continues.

Build Your Simulation
Resources and progression in a simulation game made with SoonLab

Create Events with Clear Consequences

Add customers, weather, market changes, character needs, accidents, or random events. Explain how each event affects the world and what choices the player can make.

Build Your Simulation
Player decisions changing events and outcomes in a simulation game

Playtest and Adjust Through Conversation

Play the first version and tell SoonLab what feels too slow, easy, confusing, or repetitive. Change one system at a time, then test the result again.

Build Your Simulation
Editing simulation game balance with follow-up prompts

How to Make a Simulation Game with SoonLab

Start with one small system that creates meaningful choices. Generate a playable version, test how the variables work together, and expand only after the main loop feels clear.

Step 1. Describe the setting and systems of a simulation game

Step1.Describe What the Game Simulates

Choose a setting and give the player a role. Explain what they manage, which values change, what decisions they make, and what success or failure looks like.

Step 2. Generate and play a simulation game in the browser

Step2.Generate and Play the First Version

Enter your prompt and let SoonLab build the game. Test the controls, information on screen, resource changes, events, progression, and ending in your browser.

Step 3. Improve a simulation game through conversation

Step3.Improve One System at a Time

Ask for a specific change after each playtest. Adjust prices, event frequency, progression speed, difficulty, or feedback, then play again to see whether the change works.

Make a Simulation Game

Simulation Game Prompts You Can Copy

A useful prompt explains the player's role, the main variables, the choices available, how the world responds, and the final goal. Copy one of these prompts and change the setting or rules to match your idea.

Prompt ideaPromptDifficultyBest forStyleCopy
Build a Life in Harbor TownCreate a 2D life simulation game set in a small harbor town. The player has 30 in-game days to build a stable life. Each day, they can work, study, rest, meet residents, or explore the town. Track money, energy, skills, and relationships. Jobs pay different amounts and require different skill levels. Low energy should reduce work results. Add five residents with simple schedules, interests, and relationship levels. Include random events such as a town festival, a storm, and a job opportunity. The player succeeds by reaching one career goal and building two strong relationships before day 30. Add clear menus, a day counter, readable status bars, keyboard and touch controls, and a restart button. Use a warm illustrated style.IntermediateLife choices and relationshipsWarm 2D town simulation
Run a Busy Neighborhood CaféCreate a café management simulation game. The player starts with a small budget, three recipes, and four tables. Customers arrive with different budgets, patience levels, and food preferences. The player buys ingredients, sets menu prices, prepares orders, serves customers, and upgrades the café. Track cash, ingredients, customer satisfaction, and reputation. Add a morning and evening rush, ingredient price changes, and occasional equipment problems. The player wins by reaching a five-star reputation and a daily profit target within 14 in-game days. The player loses if the café runs out of money. Add a short tutorial, clear cost and profit feedback, mouse and touch controls, and a results screen for each day. Use a colorful top-down style.BeginnerBusiness and economy systemsColorful top-down management
Keep a Space Colony AliveCreate a space colony simulation game on a cold planet. The player manages power, oxygen, food, materials, and colonist morale. They can build solar panels, greenhouses, living areas, and research stations. Each building uses resources and changes colony output. Add dust storms, equipment failures, supply deliveries, and requests from colonists. Show a forecast before major events so the player can prepare. The colony wins by supporting 20 colonists and completing a communication tower. It fails if oxygen reaches zero or morale stays critical for three days. Use a clean isometric map, clear resource panels, pause and speed controls, short explanations for each building, and a restart option.AdvancedResource chains and planningClean isometric sci-fi
Build Your Simulation

How to Build a Better Simulation Game

A simulation game becomes interesting when the player can understand a system, make a choice, and see a useful result. More variables do not always create a better game. Start with a small loop and make each part clear.

Build a Clear Simulation Loop

  • Define the main loop in one sentence so every system supports the same player goal.
  • Give every resource a clear purpose, cost, and effect on the player's choices.
  • Show immediate feedback when an action, price, event, or relationship changes the simulation.
  • Keep important values, warnings, goals, and controls easy to read on desktop and mobile.

Balance Progress and Player Choices

  • Make early progress easy to see, then introduce harder choices and trade-offs.
  • Use daily targets, new areas, story events, career levels, or other milestones to show progress.
  • Check whether one strategy is much stronger than every other option.
  • Play from the beginning to a win or fail state before adding more systems.

Useful Follow-Up Prompts

  • Make the first three days easier and introduce new systems one at a time.
  • Show why money, energy, or reputation changed after each action.
  • Reduce customer arrival speed during the tutorial.
  • Add three random events with different risks and rewards.
  • Make upgrades more expensive after each purchase.
  • Add a warning before a resource reaches a critical level.
  • Give each character a simple routine and one personal goal.
  • Make the final goal visible on the main screen.
  • Add a results panel that explains profit, losses, and customer satisfaction.
  • Add touch controls and larger buttons for mobile players.

Checks Before You Share

  • Can a new player understand their role, controls, and goal?
  • Does every main action change the simulation in a visible way?
  • Do resources create choices instead of repeated busywork?
  • Can the player recover from a mistake?
  • Do events feel connected to the setting and systems?
  • Are the win and fail conditions reachable?
  • Does the full game work on desktop and mobile?
  • Can players restart without losing the interface?

FAQs About Simulation Game Maker

A simulation game maker is a tool for building simulation games that model a system, activity, job, or world. The player makes choices and sees how resources, characters, events, or other variables change. SoonLab lets you describe these systems in plain language and generate a playable browser game.

Turn Your Simulation Idea into a Playable Game

Describe the role, systems, resources, events, and goal. SoonLab helps you generate the first version, test how the simulation works, improve it through conversation, and share the finished game.

Create a Simulation Game