The game Pegs for the TI-83+ graphing calculator, ported to the PuzzleScript engine for the browser.
Play the game online, or edit it live in the PuzzleScript editor.
The original Pegs was part of PuzzPack by Detached Solutions, and its main developer was Fred Coughlin. This port is by Rory O’Kane.
See also my in-progress exact port of Pegs to the browser.