Manifesto
Catch every fleeting idea — see it through to a finished game.
No. 01Humans decide. AI accelerates.
Design, concept, art and systems — every decision that shapes a game stays with the founders. AI tools sit beside us as productivity multipliers, helping us build fun games faster and better.
No. 02Ship in small batches.
Parenting alongside building means daily-sized parcels of work. Automated tests verify regressions on every commit, so small confident changes compound into large systems.
No. 03Start small. Go long.
We keep fixed costs near zero and put resources only where they directly affect the work. Start small, ship Steam first, then expand to mobile and console — one core build, recouped over many years.
'Dong-dong' is the moment an idea drifts up in your head — light, bobbing, waiting to be caught.— Studio Statement · 2024
Works
What we've built — and what's still in motion.
I / 03
IN DEVELOPMENT · 2026RiftCraft
Roguelike Crafting Deckbuilder
A roguelike deckbuilder built on a card-to-card crafting system that asks, at every campfire: "Play this — or melt it down?" Dark Academia art direction locks the visual identity.
- a
168 transmutation rules + ancient anchor recipes make every run a different build
- b
6 characters × 20 ascensions for deep replay
- c
Only 151 Steam titles overlap roguelike + deckbuilding + crafting
- d
15-minute runs — fits a coffee break or a commute
PlatformPC Steam → Mobile · Deck
RoadmapNext Fest 2026.10 → EA 2027
II / 03
MOBILE LAUNCH · H1 2026Cat Tavern
Cozy Idle Clicker
A cat innkeeper inherits a tiny stall and grows it into the most famous tavern in the realm, with feline staff. A cozy-fantasy idle clicker centered on warmth, humor, accomplishment and healing.
- a
Cozy-fantasy tone — no combat, no risk loops
- b
Click and idle modes, each with a clear role
- c
10 staff cats to collect / 5 venue tiers (stall → bar → modern bar)
- d
Rebirth prestige loop accelerates compound growth
ServiceFirebase · Unity IAP · Both stores
III / 03
ARCHIVE · 2023 — ART AWARDLostParadise
First-Person Survival Horror Demo
Submitted to the KOCCA LEVEL UP graduation showcase. Tension cranked so high a play-tester quit mid-demo — and it took the showcase's Art Award.
- a
Monster design, environments, props and levels all built in-house
- b
"It reminded me of a classic horror film director" — mentor review
- c
This award became the seed of the studio's founding
PlatformPC · showcase demo
HonorLEVEL UP Art Award · Grand Prize
Founders
A couple, full-stack × art.
Two players first, a studio second. They met across a shared library of games, then turned that decade of play into a team — translating player instinct directly into design.
Founder · CEOMingyu Lee이민규
Programming · System · PM · Ops
Full-stack engineer of 10 years, alumnus of Woowahan TechCamp Pro. Owns the system design and entire codebase of Cat Tavern and RiftCraft. Live-service operations translated into indie-scale payments, save, and localization infrastructure — rare for a two-person team.
- Stack
Unity 6 LTS · C# · Firebase · TDD · DDD
- Cred
10 yrs full-stack · TechCamp Pro
- Built
Cat Tavern · RiftCraft systems
- Tools
JetBrains IDE · VS Code · Claude Code · Codex · Git · AWS
Co-founder · CDSeulgi Ha하슬기
Creative Direction · 2D/3D Art · Sound
Recipient of the 2023 KOCCA LEVEL UP Art Award. Authors every visual frame from concept to UI polish, holding tone consistent across an entire title. Reconciles RiftCraft's Dark Academia and Cat Tavern's cozy fantasy inside a single studio.
- Stack
2D/3D Art · Creative Direction · Sound
- Cred
LEVEL UP Art Grand Prize · 2023
- Built
LostParadise · RiftCraft · Cat Tavern
- Tools
Blender · Maya · Substance Painter · Photoshop · Premiere
Chronicle
From 2023 to today.
Jun 2026
Cat Tavern mobile launch (planned)
Upcoming
May 2026
KOCCA Follow-on Production Grant secured · ₩24,000,000
Funded
Apr 2026
RiftCraft production begins · Unity 6 LTS
Dec 2025
Cat Tavern Clicker enters full production
Jun 20, 2024
Dong Dong Game Studio founded
Inception
Nov 2023
LEVEL UP showcase — LostParadise wins Art Grand Prize
Award
Jul 2023
Admitted to KOCCA LEVEL UP Together Next step
