Jimmy JamStudio

Indie games, made fresh

Games spread thick with fun.

Jimmy Jam Studio makes bright, bite-sized games you can play right in your browser. No installs, no sign-ups: just tap and play.

Play Chroma Storm See the games
Chroma Storm: a glowing cyan orb hero on a neon grid Out now Last Flame gameplay: the fire mage in a snowy village at night, between a brazier and walls of ice Jam entry
Our first big release · Free

Chroma Storm

Chroma Storm: a glowing cyan orb hero on a neon grid, with the rainbow Chroma Storm logo and the line Every color is a weapon

A neon bullet heaven you play with one thumb.

Drag anywhere to dodge the horde while your weapons fire on their own. Grab gems, level up, mix colors into wild weapon evolutions, and take down a boss every three minutes. Then go again, a little stronger.

  • 12 heroes, 15 weapons with evolutions, and Blaze, Storm and Glow builds
  • 4 neon stages, 17 bosses, Endless mode and Hyper Heat for experts
  • A Daily Challenge, leaderboards and a Locker of 114 looks to collect
  • Relaxed mode and Training, so younger players can join in
Play free at chromastorm.com

Plays in the browser on phones, tablets and computers. Cloud saves carry your progress between devices.

Chroma Storm on a phone: lasers fan out from the hero as the Bloom Queen boss closes in
A pink laser sweeps across a swarm in the Aurora Void stage A ring of blades spins through a horde in the orange Solar Forge stage

From the game jam

Made for AI Browser Game Jam 5, where the theme was Torch.

Jam entry · October 2026

Last Flame The Long Winter

Last Flame key art: a fire mage on a snowy rise at dusk, an ember raised, while frost creatures close in from the blue shadows

The world froze. You are the last fire mage.

Burn through frozen forests, a moonlit village and the caves under the mountain. Every room hides creatures sleeping in the ice; melt them, burn them, and light the old hearths to push the winter back. Heat is your health and your mana, so every spell is a gamble.

  • Fast top-down spellcasting: firebolts, fireballs, a nova and a dash
  • A new build every run, from rare gifts, duo combos and relics
  • Three regions, each guarded by a boss, and a dawn to win back
Play in your browser
The mage fighting in a snowy village at night, orbiting embers circling him A fight in the ice caves, with damage numbers flying and frozen crystals glowing

How Last Flame was made

The jam asks for games that are mostly AI-generated. Last Flame was directed, played and tuned by hand, and built with these tools:

Code

Written with Claude Code: the combat, the room generator, the gift and relic systems, and an autoplay bot that plays the game to check its balance.

Art

Characters, tiles, props and key art from Codex image generation, cut into 8-direction sprite sheets by custom scripts.

Music

A seven-track soundtrack generated locally with ACE-Step 1.5 in ComfyUI, one theme for each region, boss and ending.

Engine

Three.js with HD-2D lighting, bloom and tilt-shift, no build step. Sound effects come from ZzFX.

Made in the studio

We build our own tools too, and share them.

JamDraw's editor: a jam-red shape with a thick sticker outline, a star and brush strokes on the page, with color swatches and shape tools in the side panel
Free · Open source

JamDraw

A friendly vector drawing app for logos, stickers and game art.

We made it to redraw our own logo by hand. Draw with a mouse, a drawing tablet or a phone pen; pick from 66 free fonts; give anything a cartoon sticker outline; and export SVG, PNG or PDF. It runs in your browser and installs like an app.

Open JamDraw Source on GitHub

About the studio

Jimmy Jam Studio is a small indie studio started by James Caldwell. We make colorful, family-friendly games, try ideas fast in game jams, and keep polishing the ones that stick.

Questions, ideas, bug reports or press: hello@jimmyjamstudio.com