Roblox Game Idea Generator: Random Game Ideas
Pick or shuffle a genre, a setting, a twist and a goal, and get a Roblox game idea written as a prompt you can copy or build.
Genre guide: Roblox Obby Maker
How to use the idea generator
Not sure what to make? The generator above puts a Roblox game idea together from four parts: a genre, a setting, a twist and a goal. The ideas come from fixed lists on this page, so shuffling is free, needs no account and runs in your browser.
A genre here is only a starting point. PromptBlox builds from whatever you describe, so you can mix two genres, change every detail, or write an idea that fits none of them.
- Pick a genre, or skip it and press New idea. Tick “Keep this genre” when you only want new ideas for one kind of game.
- Change any part with its menu. The prompt updates as you choose.
- Copy prompt puts the idea on your clipboard for PromptBlox, your notes or a message to a friend. Build this opens PromptBlox Create with the prompt already in the message box.
- Add what only you know before you send it: names, colors, how hard it should be, and the moment you picture when someone plays it.
Build this does not start a build. Create opens with the text filled in, and nothing happens until you send it. You need a PromptBlox account to build; if you are signed out, you sign in first with Google, Discord or Roblox and come back to the same prompt.
22 Roblox game ideas by genre
Each idea below is a few sentences you can grow into a full prompt. The genre guides explain how that kind of game works and what to put in the prompt so the first build is worth testing.
Obby ideas
- Rising Lava Tower: Climb a tower of spinning platforms while lava rises from the bottom. A checkpoint sits on every fifth floor, and the fastest climb on the server goes on a board at the top.
- Museum After Dark: A course through a museum at night, over dinosaur skeletons and moving display cases. Each wing is a stage, and a guard's flashlight sends anyone it catches back to the last checkpoint.
How to plan and describe one: Roblox Obby Maker.
Tycoon ideas
- Pizza Harbor Tycoon: Run a pizza stand on a busy harbor. Ovens make pizzas, a delivery boat sells them, and upgrades add more ovens, a second floor and a faster boat.
- Moon Base Tycoon: Build a base on the moon. Drills dig up rock, a refinery turns it into crystals, and each upgrade adds a dome, a rover pad or a launch tower.
How to plan and describe one: Roblox Tycoon Maker.
Simulator ideas
- Snow Shoveling Simulator: Shovel snow around a winter town, sell it at the ice factory, and buy bigger shovels and backpacks. New neighborhoods open as the backpack grows.
- Treasure Diving Simulator: Dive for shells and coins on the sea floor, sell them at the dock, and upgrade air tanks to reach deeper, darker zones.
How to plan and describe one: Roblox Simulator Maker.
Survival ideas
- Desert Crash Site: Survive after a plane comes down in the desert. Find water at an oasis, take parts from the plane, and repair a radio to call for help while sandstorms roll through.
How to plan and describe one: Roblox Survival Game Maker.
Horror ideas
- Closing Time at the Toy Store: Players are locked in a toy store after closing. A giant wind-up doll roams the aisles and follows sound, so players sneak between hiding spots to find the store keys.
- Lights Out Library: Explore an old library during a storm. The lights flicker, a shadow creature only moves while they are off, and players collect missing pages to unlock the exit.
How to plan and describe one: Roblox Horror Game Maker.
Tower defense ideas
- Garden Defense: Protect a vegetable garden from waves of hungry bugs. Players plant sunflower turrets and scarecrow towers along the path, and a giant beetle arrives on the final wave.
How to plan and describe one: Roblox Tower Defense Maker.
Roleplay ideas
- Seaside Town: A beach town with a surf shop, an ice cream stand, a lifeguard tower and houses players can move into. Jobs pay a little, and players drive golf carts along the boardwalk.
- Airport Roleplay: An airport with check-in desks, security, a cafe and a runway. Players choose to be pilots, crew or passengers, and a plane moves between the gates on a schedule.
How to plan and describe one: Roblox Roleplay Game Maker.
Story ideas
- Field Trip Gone Wrong: A class trip to a science museum goes wrong when an experiment shrinks everyone. Chapters cross a giant lab table, escape a robot vacuum and end with the class back to normal size.
How to plan and describe one: Roblox Story Game Maker.
Racing ideas
- Mountain Rally: Race rally cars up a mountain road through dirt, snow and tight corners. Checkpoints keep the race fair, and the best lap time shows on a board at the finish.
- Go-Kart Mall Circuit: Race go-karts through an empty shopping mall at night, down ramps beside the escalators and around the fountain, with boost pads on the tricky corners.
How to plan and describe one: Roblox Racing Game Maker.
Fighting ideas
- Weather Mages Arena: Players pick a weather power (storm, sun or snow) with three moves and cooldowns, and fight on a floating arena that loses a few pieces every round.
How to plan and describe one: Roblox Fighting Game Maker.
RPG ideas
- The Clockwork Dungeon: A quest giver in a town full of gears sends players into a clockwork dungeon. They defeat wind-up soldiers for loot, reach level 5 and face a giant clock boss.
- Island Hopper: Sail a small boat between three islands, each with its own quest, enemies and treasure. Finishing all three opens a sea cave with the final boss.
How to plan and describe one: Roblox RPG Maker.
Murder mystery ideas
- Mystery on the Night Train: Rounds take place on a moving train with sleeping cars, a dining car and a roof. The Sheriff looks for clues left in each car while Innocents hide until the train reaches the station.
How to plan and describe one: Roblox Murder Mystery Maker.
Sports ideas
- Rooftop Soccer: Five-a-side soccer on a city rooftop, with bouncy walls instead of out-of-bounds lines. Matches last three minutes, and the ball gets a little faster after every goal.
How to plan and describe one: Roblox Sports Game Maker.
FPS arena ideas
- Warehouse Arena: A two-team arena in a warehouse, with shipping containers for cover, a catwalk on each side and three weapons to choose from. The first team to 30 eliminations wins.
How to plan and describe one: Roblox FPS Arena Maker.
Paintball ideas
- Candy Paintball: Two teams play paintball on a field of giant candy bunkers. A hit splats the player in the other team's color and sends them to the bench until the next round.
How to plan and describe one: Roblox Paintball Maker.
How to turn an idea into a good prompt
A one-line idea gives the build a direction. A prompt gives it rules. Before you build, add these four things:
Say what players do first
Describe the first minute: where players spawn, what they see and the first thing they do. A genre name alone does not tell the build how the game opens.
Name the places
List two to four areas and how they connect, such as a lobby, the main course and a finish platform.
Put numbers on the rules
How many stages, how long a round lasts, what an upgrade costs. Numbers are easy to test and easy to change later.
Say how it ends
What counts as winning or finishing, and what happens next: a restart, a new round or the next area.
The generator's first idea already names a setting, a loop, a twist and a goal. With numbers and a first minute added, it reads like this:
“Make a Roblox obby on a chain of four floating islands above the clouds, joined by rope bridges. Players spawn on a small starting island with a checkpoint flag. There are 12 stages, three per island: wide jumps between clouds first, then spinning planks, then rope bridges that sway. A checkpoint on each island saves progress, and a fall sends players back to the last one. Every few minutes a storm rolls in and strong wind pushes players sideways until it passes. A timer runs from the first jump to the last island, where a board shows the ten fastest times on the server.”
The guide to writing a good prompt and the Prompt guide go further, with examples for worlds, rules and changes.
From idea to a game you can test
Paste the prompt into Create, or press Build this above. Pick a build level your plan includes: Free and Lite have Light, Pro adds Medium, Max adds High, and Ultra and Ultra+ add the Ultra level. The Free plan comes with a small weekly usage allowance. PromptBlox makes one concept image as the visual reference, then builds the world and its Luau scripts while you follow the Activity feed and a 3D preview. How long a build takes depends on the level and the size of the idea.
The first build is a starting point. Play it, then ask for one change at a time in chat, such as “make the storm come half as often”. When it feels right, export the .rbxlx file and open it in Roblox Studio on a Windows or Mac computer to playtest and publish. The guide on how to make a Roblox game with AI walks through the whole process, and plans and usage lists what each plan includes. PromptBlox is for creators 13 and older.
More Roblox game ideas
- 10 Roblox game ideas for beginners: ten small ideas, each with a full prompt, a first change to try and what to check in Studio.
- Roblox obby obstacles: 14 obstacle ideas in course order, from easy to hard.
- Roblox vehicle ideas: cars and other vehicles players can drive, and how to describe their controls.
- Roblox NPC ideas: characters for your game, described by role, look and behavior.
Frequently asked questions
Is the Roblox game idea generator free?
Yes. The generator works in your browser without an account and does not use any PromptBlox usage allowance. Building a game from an idea needs a PromptBlox account. The Free plan includes Light builds with a small weekly usage allowance.
Does the idea generator use AI?
No. It picks from fixed lists of genres, settings, twists and goals on this page and joins them into a prompt. Shuffling runs in your browser and does not call a server. AI only comes in when you build the idea in PromptBlox.
How do I come up with a good Roblox game idea?
Start from something players do, not from a theme. Pick one action that is fun to repeat, such as jumping, collecting or hiding, then give it a place and a reason to keep going. Keep the first version small enough to test in one sitting, and add more after you have played it.
Can I use these ideas for my own Roblox game?
Yes. They are starting points, so change anything you like and make them your own. Whatever you publish on Roblox still has to follow Roblox's rules for experiences.
What happens when I press Build this?
PromptBlox Create opens with the prompt already in the message box. It does not start a build: you can edit the text and pick a build level first, and nothing happens until you send it. If you are signed out, you sign in with Google, Discord or Roblox first, and the prompt is kept.
Do I need Roblox Studio to make a game from these ideas?
Not to start. You can build and preview the game in your browser with PromptBlox. To playtest the gameplay and publish it on Roblox, open the exported .rbxlx file in Roblox Studio on a Windows or Mac computer.
Already know what you want to make? Describe it in your own words.
Start creating