What it is

A 3D simulation game about making your own resin mold. You place stickers, pour resin, add glitter, let it cure, then peel the mold off. Released by Homa Games, with 2M+ downloads.

What I owned

• Development lead and sole programmer of a three-person team with a technical artist and a designer.
• Everything on the client outside technical art: gameplay, UI, data structures, SDK and platform integration, builds, and store submission.
• Sole owner of day-to-day communication with the publisher: test build handoff, scheduling, and QA follow-up.

Engineering decisions

The de-molding interaction uses runtime mesh deformation. The real work was tuning it into something that holds up on mobile.

The opening mold drop is a code-driven curve rather than a physics simulation: it keeps the bounce feel and plays out identically every time. Peeled pieces carry colliders baked in advance and left disabled until the moment they fall. With that many pieces, leaving them enabled keeps physics running for nothing, and creating them at drop time concentrates the cost in a single frame; pre-baking and disabling avoids both. Sticker placement is validated with Physics.ComputePenetration.

What it is

A 3D mobile game inspired by the Korean series Squid Game. I watched the series early on Netflix in Korea and pitched turning it into a game before it spread worldwide.

I implemented the concept within a tight window and submitted it to BoomHits’ UA testing. The project ran from ideation through implementation.

What I owned

• Development lead and sole programmer of a three-person team, from gameplay systems to the store submission build.
• Test submission, scheduling, QA follow-up, and coordination with the publisher’s team.
• Iterated builds on UA test results and publisher feedback.

Rate increase and UA test result

Trusting how consistently and professionally I had handled the earlier titles, BoomHits raised my contract rate without my asking.

It performed well enough in BoomHits’ user acquisition testing to record a CPI of $0.03, with a BoomHits executive calling it “an unbelievable number.”

How it was validated

The publisher owned test design and metric interpretation. I turned the results they shared into implementation work and kept a cycle of folding them into the next build.

What it is

A mystery visual novel set in a remote island village. You gather clues through conversation and exploration, combine items to solve puzzles, and the story and ending shift with the player’s choices and values.

This is a different class of problem from hypercasual. The work is keeping six to eight hours of story coherent alongside the choice flags, items, and save state that accumulate across it, and I owned that from design through commercial release.

Systems I built

• Managing 6~8 hours of branching script as text did not hold up, so I built a node-based script editor as a Unity Editor extension. Dialogue and choices are composed as nodes, and the whole flow is managed visually.
• Nodes carry conditional gates that branch on accumulated flags and value state. Reachable endings and orphaned branches are traceable in the editor, so the structure stayed under control as routes multiplied.
• Multiple routes and endings, exploration and interaction, items, escape-room puzzles, save and load, multi-resolution UI scaling, and build setup for Steam and South Korea's STOVE game platform.

Solo from concept to release

• Scenario writing and game design, Unity / C# development, UI, asset integration, sound editing, and store submission.
• With no art or sound staff, I produced the backgrounds, animation, SFX, and BGM myself. Backgrounds were generated with MidJourney, animation with Niji Journey, and SFX and BGM samples with ElevenLabs, then all hand-edited and reviewed before integration. That combination is what made a commercial-length solo release possible.
• Reached 104% of the crowdfunding goal on South Korean crowdfunding platform Tumblbug, and followed through to merch production and backer shipping.

What it is

A casual defense game where spinning the slot recruits seven hero types: water, fire, ice, lightning, poison, rock, and elemental. You upgrade and merge them into a lineup, choose the timing of each upgrade, and stop incoming waves to clear stages.

Data and content pipeline

• Separated hero, buff, and augment data into ScriptableObjects with a runtime loading structure.
• Built an Editor pipeline that imports balance data from Google Sheets into Unity assets, so tuning numbers does not require code changes.
• Built an Editor tool that batch-generates augment assets, reducing repetitive work when adding content.

Release and WebGL port

After its official release on South Korean app marketplace ONE store, I ported it to WebGL. The browser build preserves the mobile gameplay loop and data structure while making the game playable without installation.

What it is

A multilingual QR menu service for restaurants. Diners scan a code and read the menu in their own language; owners manage menu content and QR images themselves.

What I build and run

• Next.js / TypeScript frontend, database and storage, i18n, deployment, and incident response.
• A pipeline built on the Claude API that reads a single menu photo and extracts items, prices, and option structures into a digital menu. Translation is part of the same pass.
• Menu names and prices go through an admin review step, and low-volume work is handled directly rather than through the API to keep call costs down.
• Built an owner-facing menu and QR management console so restaurants can update content during operation.

How it runs

• The initial build is done, and owners manage menus and QR codes from an admin console themselves. Day-to-day operation does not need a developer on hand.