OCTI ARENA & ARCHIVE

The Strategy Game of Pods & Prongs

OCTI is the acclaimed abstract strategy board game invented by Don Green in 1999. Players maneuver octagonal pods across a grid, tactically inserting directional prongs into pod slots to unlock multi-directional jumps, leap over opponent pieces, capture adversary pods, and invade enemy home bases.

In 2000–2001, Charles Chiou participated in the early Computer Octi research community—competing in the inaugural Computer Octi Tournament (New Haven, Oct 2000) and winning the 2001 Computer Octi Tournament (August 25, 2001) in the 9×9 OCTI division against Charles Sutton's Casbah. Chiou's tournament-winning engine was built on a high-performance C++ alpha-beta minimax search evaluating material balance, piece mobility, tactical threats, and goal distance, and was published alongside the open-source Linux/UNIX OCTI Player & C/C++ Robot SDK.

Historical tournament brackets, transcripts, and engine technical reports are preserved on Charles Sutton's Computer Octi Archive and the 2001 Selfso OCTI Project Archive.

Bringing OCTI Back to the Internet

octi.selfso.com revives the OCTI platform for modern computing. Powered by a high-performance C++17 engine and server, it hosts an open Game Archive with CC-BY 4.0 telemetry and interactive replay, an AI Research & Elo Leaderboard, and a forthcoming live Internet multiplayer arena connecting Web, Android, and Windows players in real time.

Play against the multi-difficulty C++ AI bots, test tactical opening lines, inspect recorded games ply-by-ply, or install our native clients for desktop and mobile play: