Fantastic Contraptions

There are a few of these around, they can be good fun. Using turning wheels and rods, create a contraption to move the pink ball to the pink box.

Fantastic Contraption

Here's neat contraption I made.
And another.
And another.
And another.
And yet another.

Click-a-tone

I found this annoying. If you like Guitar Hero, maybe it's your thing. Maybe not.

Simon Says.

In a similar vein, but even better, I think:

Boxworld

Careful not to think outside the box, now.

Escaping

Nothing new here, really, in terms of flash-based puzzle games. But, aside from the pastel colours (ugh!), the implementation is quite nice.

Slide blocks back and forth to free the plus-cubes in The Escape.

The Naked Game

This "worlds first piece of online conceptual video game art" won't take much of your time, so it's among the safest (so to speak) of the entries here, but it has charm. See the code behind a rudimentary version of Pong, and remove lines as you please to see the effects this has on the game.

The Naked Game

Thanks, Brian.

Last Stand

Zomething for Zave?

Ze Lazt Zztand II

Zombie galore, with added chainsaw bonus.

Eight Letters

I'm very bad at games such as these. For the fans (and there seems to be many) of Scrabble in its various implementations, however, this should be a hoot:

Eight Letters

You create words from a selection of eight letters, longer words gives a higher score, and you have to reach a certain score to get to the next level.

Edit: Yup, I am no good at this game. But I have found out that there is some training involved. I'm still awful, but am improving.