ISFL Portal
Statistics and league hub for the ISFL — player/team management, stats analysis, api integrations, and league data for the sim football community.
Dotts Trading Cards
Digital trading card platform for simulation sports leagues — browse, collect, trade, and showcase player cards from the ISFL.
lemon-bluu
General-purpose Discord bot for ISFL communities — stat tracking, real-time updates, and community management tools.
Build a Set
Build and manage your very own Magic: The Gathering set. Track your card inventory, calculate copy requirements for drafts, analyse distributions, and browse official sets for reference and templating.
Image Pixelation
Transform photos into geometric tessellations — triangles, hexagons, squares — with custom color palettes and perceptual dominant-color detection.
Dropdown Builder
A visual editor for styled BBCode dropdown menus. Full control over colors, borders, font sizes, and option content — with live preview and clipboard export.
MTG Elo Ranker
Head-to-head ranking for Magic: The Gathering cube cards using the Elo rating system. Connect any CubeCobra cube and start voting.
I'm Nelson Kim (lemonoppy) — a Senior Front-End Engineer based in Ottawa. At Trend Micro I architect enterprise React applications, lead cross-team infrastructure work, and help engineers across the org ship better code.
Outside of work I build tools for the communities I care about — sim football leagues, Magic: The Gathering, and generative art experiments. This site is where those projects live.