23 ideas
A game like Roblox
A platform of user-made multiplayer games: simple 3D worlds players can build in, join other players online, avatars you can customise and more.
Big buildA game like Minecraft
A block-building sandbox game: voxel world with simple terrain generation, place and break blocks, day and night cycle and more.
1–2 weeksA game like Fortnite
A battle royale shooter: small arena map, shrinking safe zone, loot drops and more.
Big buildA game like Wordle
A daily word guessing game: daily puzzle shared by all players, coloured tile feedback, on-screen keyboard and more.
WeekendA game like Chess.com
An online chess site: play online against others, play against a computer, puzzles and more.
1–2 weeksA game like Pokémon GO
A location-based creature collecting game: map of your real surroundings, creatures that spawn near you, catch mini-game and more.
Big buildA game like Candy Crush Saga
A match-3 puzzle game: grid of pieces to swap, matches of 3 or more clear and cascade, special pieces for 4 and 5 matches and more.
WeekendA game like Among Us
A social deduction party game: lobby with a room code, crewmates do tasks and impostors sabotage, emergency meetings and voting and more.
1–2 weeksA game like Flappy Bird
A one-tap side-scrolling arcade game: tap to flap, endless pipes to dodge, score and best score and more.
WeekendA game like Tetris
A falling block puzzle game: falling pieces you rotate and move, line clears, speed that rises with level and more.
WeekendA game like Tamagotchi
A virtual pet game: pet with hunger, happiness and energy, feed, play and clean, stats that drop over time and more.
WeekendA game like Super Mario Bros.
A side-scrolling platformer: run and jump physics, tile-based levels, enemies to stomp and more.
1–2 weeksA game like Subway Surfers
An endless runner: three lanes to swipe between, jump and slide, obstacles and coins and more.
1–2 weeksA game like Grand Theft Auto
An open-world action game: top-down city to explore, get in and drive cars, missions and more.
Big buildA game like BitLife
A text-based life simulator: age up one year at a time, random life events with choices, stats for health, smarts and happiness and more.
WeekendA game like Clash Royale
A real-time card battle strategy game: deck of unit cards, elixir that refills, two-lane arena with towers and more.
Big buildA game like Temple Run
A 3D endless runner: run forward automatically, swipe to turn, jump and slide, obstacles and gaps and more.
1–2 weeksA game like Block Blast
A block placement puzzle: drag shapes onto a grid, clear full rows and columns, three pieces per round and more.
WeekendA game like Geometry Dash
A rhythm-based platformer: auto-running square, jump to the beat, spikes and pads and more.
1–2 weeksA game like Pac-Man
A maze chase arcade game: maze with dots to eat, chasing enemies with different behaviours, power pellets and more.
WeekendA game like The Sims
A life simulation game: build a house, characters with needs, free will actions and more.
Big buildA game like Stardew Valley
A farming life sim: plant, water and harvest crops, day and season cycle, shop to sell produce and more.
1–2 weeksA game like Angry Birds
A physics slingshot game: slingshot aiming, physics structures to topple, targets to hit and more.
Weekend
More things to build
Upscalers, background removers, converters and generators. Image tools pull huge search volume and most of the work can run in the browser.
Compressors, croppers, GIF makers, subtitle generators and intro makers that people search for every month.
Voice generators, transcription, trimmers and noise removal. Pair a simple editor with a speech API and you have a product.
Hashtag, caption, title and bio generators, plus schedulers and thread tools. Small AI tools with steady search demand from creators.
Checkers, validators and generators for site owners: sitemaps, robots.txt, meta tags, SSL, speed and broken links.
Resume builders, AI writers and other everyday tools that people search for by name.
Profit, tax, churn, ROI and creator rate calculators. The easiest wins on this page: no backend, one formula, and searchers who are ready to act.
Your own take on ChatGPT, Perplexity, Midjourney, Otter and more, each with a prompt that wires up the API calls for you.
Feeds, follows, stories and communities: prompts for your own Instagram, Reddit, Threads or Letterboxd for a niche.
Chat, email and calls, from a Slack for your community to a Discord-style server app.
Swipe stacks, matches and chat for a niche dating app, with safety features built in from the start.
To-do lists, notes, wikis, kanban boards and project trackers. Most are a weekend to a week with Claude Code.
Form builders, help desks, e-signature, website builders and design tools. Plenty of people pay for each of these every month.
CRMs, email marketing, social schedulers and lead tools: the software that businesses pay per seat for.
Budgeting, invoicing, expense tracking, trading journals and more. Where money moves, the prompts point you to a licensed provider.
Job boards, applicant tracking, shift scheduling and HR records for small teams.
Two-sided marketplaces and online stores, from a niche Etsy to a local Airbnb, with payments through Stripe Connect.
Scheduling, appointments, reservations and point of sale for local businesses: some of the easiest software to sell.
Workout logs, calorie counters, meditation and running plans. Many are a weekend build with a clear audience.
Flashcards, quizzes, courses and homework help, with Claude generating the lesson content.
Streaming, players, live video and media databases, with a video or audio API doing the heavy lifting.
Link-in-bio pages, newsletters, digital product stores, memberships and video editors for creators.
Maps, trail finders, flight trackers and booking tools built on open map data and travel APIs.
Scanners, file storage, password managers, blockers and other everyday tools.
Give Claude more to work with while it builds: skills, MCP servers and subagents. Once it ships, use the overnight prompts to find users for it.