Free Game Dev Tools: Generators and Calculators
Small, free tools for the jobs around making a game: naming it, planning it, making placeholder art and sounds, and sizing up a Steam launch. Free tools run in your browser with no account. AI tools need a Ziva account and use your plan's AI usage.
Ideas and design
- Game Idea GeneratorRandom game ideas from a genre, setting, mechanic, goal and twist.
- Game Design Document GeneratorFill in four short steps and download a one-page GDD as Markdown.
- Lore GeneratorA creation myth, factions, timeline and quest-hook legends for your game world.
- Dungeon GeneratorSeeded roguelike dungeon maps with a Godot TileMapLayer script export.
- Monster GeneratorVideo game monsters with stats, behavior states, a weakness and drops.
- Game Jam Theme GeneratorRandom game jam themes with an interpretation hint and optional extra limitations.
- Game Mechanic GeneratorRandom game mechanics built from a player verb, a rule and a resource or limit.
- Core Loop BuilderDraw a core gameplay loop diagram with an optional meta loop and export it.
- Level Design Idea GeneratorLevel design ideas as a brief with a hook, five beats, set pieces and a secret.
- Puzzle Idea GeneratorVideo game puzzle ideas with a rule, a solution sketch, a teaching step and a harder variant.
- RPG Quest GeneratorA complete side quest with staged objectives, a choice and a reward, as text or JSON.
- Boss Fight Idea GeneratorPhase-by-phase boss attacks with telegraphs, counterplay, a hazard and a weak point.
- Roguelike Upgrade GeneratorA pool of roguelike upgrades with rarities, numbers, stacking rules and synergy tags.
- Skill Tree MakerGenerate a talent tree with prerequisites and point costs, edit it, and export it.
- Fantasy Map GeneratorSeeded fantasy world maps with rivers, named towns and a heightmap export.
- Game Elevator Pitch GeneratorA one-liner, a 30-second spoken pitch and a publisher email, written from your game.
- Video Game Plot GeneratorA full story outline for your game, with characters, a twist and a level-by-level map.
- NPC Dialogue GeneratorA branching NPC conversation for your game, as a readable tree, a script and JSON.
Name generators
- Game Name GeneratorVideo game title ideas from a genre, a mood and your own keyword.
- Game Studio Name GeneratorIndie game studio names from a vibe and a naming style.
- Fantasy Character Name GeneratorFantasy names for seven races, each with an invented meaning.
- Fantasy Town Name GeneratorFantasy villages, towns and cities, each with a story hook.
- Planet Name GeneratorSci-fi planet names by world type, in hard sci-fi, space opera or alien style.
- Spell Name GeneratorSpell names with effects for ten elements and four power tiers.
- Weapon Name GeneratorWeapon names and flavor text for eight weapon types and five rarities.
- Boss Name GeneratorBoss names with a title, an arena and a fight mechanic.
- RPG Item Name GeneratorLoot and magic item names with effects and flavor text, from Common to Legendary.
- Achievement Name GeneratorAchievement names paired with the moment each one rewards.
Art and assets
- Game Icon GeneratorResize artwork into every game icon size, or generate a new icon with AI.
- Game Character GeneratorAI character sprites in pixel art or smooth style, on a transparent background.
- Pixel Art ConverterTurn any image into pixel art with a set width and a reduced or retro palette.
- Sprite Sheet GeneratorPack animation frames into one sprite sheet PNG with JSON and a Godot SpriteFrames file.
- Normal Map GeneratorTurn a sprite or texture into a normal map and preview the lighting live.
- Card MakerDesign poker-size game cards with art and stats, then print them 9 to a sheet.
- Game Logo GeneratorDesign a transparent game title logo for free, or generate one with AI.
- Seamless Texture GeneratorMake your own texture tileable for free, or generate a seamless one with AI.
- Noise Texture GeneratorMake seamless Perlin, ridged or Worley noise PNGs with a matching Godot .tres.
- Pixel Art Palette GeneratorBuild an 8, 16 or 32 color pixel art palette from hue-shifted color ramps.
- Sprite Sheet SlicerCut a sprite sheet into separate frame PNGs and a Godot SpriteFrames file, right in your browser.
- Autotile Template GeneratorGenerate a 47, 16 or 13 tile terrain tileset template with a ready Godot 4 TileSet file.
- Placeholder Sprite GeneratorGenerate labeled placeholder art, silhouettes, pickups and buttons as PNGs and a sprite sheet.
- Bitmap Font GeneratorRender a font into a PNG atlas and a BMFont .fnt file that Godot 4 imports as a font.
Sound
- Retro Sound Effect GeneratorSynthesize 8-bit coin, laser, jump and explosion sounds and download them as WAV.
- AI Sound Effect GeneratorType a description and get AI-generated game sound effects as MP3 files.
- Chiptune GeneratorCompose a seeded 8-bit music loop with four NES-style channels and download a looping WAV.
Game math and calculators
- XP Curve CalculatorTurn an XP formula into a level table with kills and playtime per level.
- Loot Table CalculatorSee each item's real drop chance and how many kills it takes, with optional pity.
- DPS CalculatorBalance combat: DPS with crits and armor, time to kill, and two builds compared.
- Frame Time CalculatorTurn a target FPS into a millisecond budget per system, with Godot settings to match.
- Pixel Perfect Resolution CalculatorCheck how a pixel art resolution scales on real screens and get the Godot settings.
- Godot Tween Easing VisualizerSee how each Godot Tween transition and ease type moves, then copy the tween code.
- Game Development Time EstimatorEstimate a low, likely and high number of weeks to finish your game.
- Game Development Cost CalculatorBudget your game's team and one-off costs and find the break-even number of copies.
Godot tools
- Godot Collision Layer CalculatorPlan Godot collision layers and masks and get the bitmask values and code.
- Godot Shader GeneratorPick a 2D effect, tune its uniforms with a live preview and download a Godot 4 .gdshader.
- GDScript Boilerplate GeneratorTyped Godot 4 GDScript templates for player controllers, state machines, health and autoloads.
- Godot Gitignore GeneratorBuild a Godot 4 .gitignore and .gitattributes with C#, editor and Git LFS options.
- Godot Input Map GeneratorGodot 4 input actions for keyboard, mouse and gamepad, as an autoload or a project.godot section.
- Godot 3 to 4 ConverterRule-based GDScript upgrade from Godot 3 to Godot 4, with a line-by-line change list and manual-work warnings.
- Unity to Godot ConverterAI converts one Unity C# script to typed Godot 4 GDScript and lists the API mappings and manual steps.
Steam and launch
- Steam Revenue CalculatorEstimate a released Steam game's sales and revenue from its public review count.
- Wishlist to Sales CalculatorTurn launch-day Steam wishlists into week-one and first-year sales estimates.
- Steam Capsule MakerTurn one key art image and a logo into every Steam store and library capsule.
- Devlog Idea GeneratorGet five devlog ideas with a hook, an outline and a footage list for each.
- Steam Regional Pricing CalculatorEstimate a Steam price range in every currency from public exchange-rate and purchasing-power data.
- Steam Store Page ChecklistScore your Steam page against Valve's requirements and get a fix for every gap.
- Steam Tag PickerChoose up to 20 Steam tags, ordered the way Steam weighs them, with conflict warnings.
- Steam Release Date PickerPick a Steam release week around Valve's published sales, Next Fest and Fest dates.
- Press Kit GeneratorTurn your game's facts, features and screenshots into a hostable press kit page.
- Steam Short Description WriterAI drafts of your Steam short description and taglines, with character counts.
- Game Trailer Shot List GeneratorA timed shot list and capture checklist for your announcement, gameplay or launch trailer.
- itch.io Page WriterAI-written itch.io page body with features, controls and credits sections.