FFF: MMMMMM is a flash game that takes the game mechanics of the indie hit VVVVVV and transforms them from a fast-twitch platform game to a puzzle platformer. [more inside]
posted by lemuring on Apr 20, 2012 - 7 comments

Masyu, also known as Pearls, is an NP-complete logic puzzle created by the makers of Sudoku. Brandon McPhail provides a few free puzzles to get your feet wet on his web site (Java applet). Once you've mastered those, UCLICK Games offers a free daily puzzle (Flash) with the past month of archives available too. [more inside]
posted by The Winsome Parker Lewis on Jan 18, 2012 - 28 comments

Impasse is a simple flash-based puzzle game that involves getting your object from point A to B.
Notes:

Levels you complete can be scrolled through using "x" to move to the next level and "d" to return the level select button to the first level.

The browser saves your progress, so you can close your tab/browser and return to it later.

posted by lemuring on Jul 11, 2011 - 19 comments

A logic puzzle called NAWNCO.
posted by lemuring on Apr 11, 2011 - 63 comments

Picma Squared (flash, game) "You got your Picross in my Minesweeper!" "You got your Minesweeper in my Picross!" [more inside]
posted by Ufez Jones on Apr 10, 2011 - 8 comments

End of the decade flash fun: Picma Picture Enigmas.
posted by Terminal Verbosity on Dec 31, 2009 - 4 comments

Inspired by this earlier post, I thought it was time to formally introduce people to Rocky's Boots. [more inside]
posted by wanderingmind on Mar 28, 2008 - 12 comments

A virtually unlimited supply of randomly-generated logic puzzles, in a variety of sizes and difficulties: Nonograms. Slither Link. Nurikabe. Bridges. Light Up.
posted by Upton O'Good on Nov 28, 2007 - 18 comments

Use everyone's logic and vocabulary skills to figure out what the secret word is.
posted by Blazecock Pileon on Jul 20, 2007 - 27 comments

The Einstein Puzzle by Flowix Games is based on an old DOS game called Sherlock, which, in turn, was based on Einstein's (Supposed) Puzzle (Previously). No, it's not Friday yet, and no, it's not Flash. It's a really logical game, and it's really damn hard. I've only won once, and that was within the first few times of playing. If you find it hard to figure out what's going on, read THIS... It helped me to figure out EXACTLY what the hell was going on. The authors are Russian, and the help in the game may only serve to confuse you. ;) It's free, and runs on Windows, Mac, and Linux. I'm hooked on it, Dammit. :D
posted by Vamier on Mar 22, 2007 - 32 comments

Japanese Flash logic test
Get the family from one side of the river, to the other. [more inside]
posted by plemeljr on Apr 8, 2004 - 28 comments

"They are, it is true, almost laughably simple by comparison with real people and real societies, but that is exactly the point. If even the crudest toy societies take on a life and a logic of their own, then it must be a safe bet that real societies, too, have their own biographies." Things have certainly gotten more interesting in the years since John Conway invented the game of life.
posted by tdismukes on Apr 2, 2002 - 20 comments