Play

Games, playful arithmetic, and the communities that form around them.

612 POAP Challenge Archived
A summer 2025 scavenger hunt of 31 Minneapolis location POAPs, drawn in the spirit of the 612 Series.

May 31, 2025 – Sep 1, 2025 Latest page change Jan 8, 2026
Ask Planet Kubb Retired
A Question2Answer site where Kubb players asked and answered questions about the game, part of the Planet Kubb sites.

2018
Clash Royale API Agent Reference Active
Public, agent-first documentation of how the Clash Royale API actually behaves, with observed response shapes, quirks, and game modes.

Mar 2026 – now Latest commit Oct 21, 2026
Elixir Active
A service that records Clash Royale history and serves it to players, clans, and their AI agents over MCP.

Sep 3, 2026 – now Latest publication Oct 21, 2026
Elixir Bot Retired
POAP KINGS’ first clan agent, a Discord bot that watched the clan and talked with its members from February to September 2026.

Feb 2026 – Sep 26, 2026 Latest commit Sep 26, 2026
Elixir Clan Active
Clan management on Elixir, where a clan’s own written policy is run against the record to guide its leaders’ calls.

Sep 2026 – now Latest commit Oct 21, 2026
Elixir Collector Active
A small, signed Go program that volunteers run on their own machines to fetch Clash Royale API data for Elixir’s shared record.

Sep 4, 2026 – now Release v3.0.6 Sep 28, 2026
Elixir Discord Active
An open-source Discord bot any Clash Royale clan can run, which gets every fact it states from Elixir MCP tool calls.

Sep 2026 – now Latest commit Oct 16, 2026
Elixir Drop Active
A free browser game, run by POAP KINGS, for learning Clash Royale cards and their elixir costs through six fast game modes.

Jun 13, 2026 – now Latest commit Oct 16, 2026
Escaping Things Active
My family’s escape room team log, with every room played since 2016, on a map with trips, players, and stats.

Feb 23, 2026 – now Latest commit Oct 16, 2026
Jiggy Thing Puzzles Archived
A 500-piece jigsaw puzzle our family drew and boxed ourselves, sold to raise money at Things 4 Good.

Oct 2021
Open Loop Archived
A nine-episode podcast with Garrick van Buren in 2012 and 2013, archived with transcripts and a feed.

Jun 1, 2012 – Apr 12, 2013 Latest publication Apr 12, 2013
Planet Kubb Dormant
A Kubb community network Garrick van Buren and I built in 2012, with a feed aggregator, a wiki, a Q&A site and club sites.

2012 – now Latest page change Jun 23, 2019
Planet Kubb Score Active
My notation and scoring system for recording Kubb games, begun on Planet Kubb in 2012 and being rebuilt, not yet published.

2012 – now Latest commit Aug 17, 2014
POAP KINGS Active
The website of POAP KINGS, my family’s Clash Royale clan, publishing its roster, data, and season recognition.

Feb 2026 – now Latest commit Oct 21, 2026
q2a-number-captcha Retired
A Question2Answer CAPTCHA plugin that asks for one digit of a nine-digit number written out in words.

Nov 16, 2014 Latest commit Nov 28, 2015
Release Notes Active
A daily email with today’s version number; reply with notes from the day and they become that version’s release notes.

Oct 8, 2026 – now Latest commit Oct 21, 2026
Road Sign Math Active
A game of finding road signs whose numbers form an equation, begun as a blog in 2005, rebooted as a wiki in 2011 and as a blog again in 2023.

Feb 13, 2005 – now Latest commit Jun 12, 2026
Your Version Number Active
A website that writes your age as a software version, decades.years.days, with a Work Edition for job tenure.

May 3, 2026 – now Latest commit Oct 7, 2026