How to build a Roblox simulator with AI

Simulators are one of the most popular genres on Roblox: click or collect, earn currency, upgrade, unlock a new area, repeat. The formula is well known, which makes it a great match for an AI agent. The interesting work is in the tuning and the content, not the plumbing.

The core loop

Every simulator is a loop with three beats:

Gather. The player does an action that yields a resource: clicking, swinging, collecting.
Convert. The player sells or turns in the resource for currency.
Upgrade. The player spends currency on something that makes gathering faster or opens new zones.

Describe your game in these terms and the agent has a clear target.

1. Brief the agent

Build a mining simulator. Players click ore to collect it into a backpack with a capacity. A sell zone converts ore to coins. A shop sells a bigger backpack and a stronger pickaxe. Show coins and backpack fullness in the UI.

Naming each system, its inputs, and its outputs gives you a build you can test piece by piece.

2. Build the data first

A simulator lives or dies by its numbers and its saving. Ask for:

A ModuleScript of config: ore values, upgrade prices, backpack sizes.
Player data kept on the server: coins, ore, upgrade levels.
DataStore saving with error handling, loading on join and saving on leave and on a timer.

Keeping tunable values in one config module means balancing later is a single-file edit.

3. Make the gather action work

Whether it is a click or a swing, the server should decide the result. The client only asks. Ask the agent to validate on the server, for example by rate limiting clicks and checking the player is near the target. This blocks most exploit scripts.

4. Add selling and the shop

The sell zone is a Part with a touch or prompt handler. The shop is UI plus a RemoteEvent. The pattern is always the same: the client requests a purchase, the server checks coins, subtracts the price, applies the upgrade, and replies with the new state.

5. Add zones and progression

Progression is what keeps players returning. Ask for areas that unlock with currency or level, each with a higher value resource. A teleporter or door that checks the unlock on the server keeps it safe.

6. Add feedback

Small effects make a simulator feel good: numbers floating up when you collect, a sound on sell, a progress bar on the backpack. These are cheap to add and have a big effect. Ask for them after the loop works.

7. Playtest and tune

Run the game and play the loop for ten minutes. Ask yourself: when is the first upgrade? Is it too soon or too late? A common target is a first meaningful upgrade within a minute or two. Adjust the config and replay. Kiwari can run the game and check for errors, but pacing is something you feel.

Pitfalls

Trusting the client. Never let a client say how much it earned.
No saving. Players expect progress to persist.
Inflation. If currency grows faster than prices, nothing feels earned. Plan your curve.
Performance. Hundreds of parts with their own scripts will hurt on mobile. Use one script that manages many objects.
Too much at once. Ship the loop, then add pets, rebirths, and events.

Features to add later

Pets that boost earnings.
Rebirths that reset progress for a multiplier.
Daily rewards.
Limited time events.
A leaderboard.

Start with the loop. Start for free and build it step by step.

All posts