Felix Deng.

UC Berkeley CS ’29 · games, AI, research

I finish things.

games, AI companions, and the research behind them.

See the work
4
apps live on the App Store
3
peer-reviewed papers
1st
of 160+ · Microsoft game-dev comp

Selected work

Things I've shipped & published

Companion Connect chat: the user says they have been feeling isolated after moving, and the companion replies with suggestions for meeting people
The AI chat. The mood chip updates as the conversation goes on. Recorded at 2× speed.
AI / social impact

Companion Connect

AI companion app for teen loneliness — live on the App Store; 500+ peak daily users (through August 2025). 2nd place, IgniteCS Programming Expo.

Ionic ReactTypeScriptCapacitor (iOS)+3
The same duck subject regenerated across three prompt iterations: a flat circular vignette, then a monochrome city street, then a full-colour street scene with passers-by
One subject across successive prompt iterations. Played at 4× speed.
AI research

Visual Prompt Engineering

Two peer-reviewed papers on pairing LLMs with diffusion models to speed up creative writing — 39–52% fewer prompt iterations to hit the same story quality.

GPT-4DALL·EPrompt engineering+2
A Hunt the Wumpus run: the player moves across the numbered hex map, falls into a pit, and is put through a three-question trivia round to climb back out, with each answer marked correct or wrong
Falling into a pit starts a trivia round — answer your way back out. Recorded at 2× speed.
Game development

Hunt the Wumpus

AI-guided learning game inspired by the text-only classic — first place at Microsoft's Hunt the Wumpus game development competition, later shipped to the App Store.

UnityC#Game AI+2
All work