Cursor * 10

Click stairs and move.
The 16th floor is a goal.
Cooperate by oneself?!

You heard the man - now do it!

GemCraft Tower Defence

Similar to Desktop Tower Defence this game is based around defending against waves of enemy minions. In this game every tower can be made into a weapon by placing a gem on top of it. The various colours of gems have different powers, and you can combine them to make gems with mixed colours. The gems also have different strengths depending on the shape - by saving up you can purchase more powerful gems.
There are lots of levels, and the aim is to complete them all above a certain level, which I estimate would take days. Luckily you can save your progress and come back to it later.

Grow Nano 3

More weirdness in the latest game in the grow series. This time the aim is to help the little man get back to full health. It's not amazing, but if you haven't already seen them I recommend trying some of the other games on the site!
Tontie
Grow Cube
Grow Island

Box Heroes Teleporter

Box Heroes Teleporter is a very simple game where the aim is to roll the coloured boxes around to their respective goals.
The game is made considerably harder by the presence of teleporter blocks which transport a block from the "in" end of one, to the "out" end of the other. These transporter blocks can be moved around themselves, and a lot of the levels involve using the teleporter blocks to stack towers of blocks.
Click on a block to select it, and then use the left and right arrows to roll a block. I've solved the first fourteen levels, so leave a comment if you want a walkthrough one of these.

Unique

Simply click on the odd circle out. Fifty levels of odd-one-out fun. As the levels go on the puzzles get harder and harder, and I think I fluked the 50th level!

See if you can beat my score of 159680.
 

Chore Wars

The most amazing idea for getting housework done more frequently. Each house member creates a character and each time they complete a household chore they gain experience points!
The person who sets up the list can set up a list of "adventures", each with a corresponding number of points for completing it (it should be roughly one point for thirty minutes of work). The person with the most points each month should ideally be rewarded in some way, but that can be agreed upon by the household.

If only we'd found this at the start of the year!

Chronotron

A very clever game where the aim is to collect the "Skip" button, and then get to the exit. The twist - every time you go to the exit without the "Skip" button, you are transported back in time to the beginning of the level. However each time you restart the level your former self is there, doing whatever you just did.

Some of the levels are fast, reaction or timing based, while others are very clever puzzles that require you to plan what you will be doing minutes in the future, whilst remembering what you did minutes in the past. Certainly one of my favourite games, and maybe my favourite game concept ever!

Qwerty Warriors 2

Very much like Qwerty Wars but with all the annoyances removed! No longer do you have to press enter after each word, no more words obscuring other words and now all the words drop from the top allowing easy reading on the way down. When you start typing a word it appears in the status bar showing you how many of the letters you've hit so far. You get a multiplier increase each time you type a word without making a mistake, but obviously if you take too long then you start to lose health.
I'd advise against using the 'easy' level because it really is easy! Great help if you're learning to touch type.

Geoffrey's Quest

Geoffrey's Quest is a typical point and click escape game. Instead of escaping a room, you play Geoffrey who is searching an island for his kidnapped girlfriend Jen.

The game is ok but the ending is very creepy. Also, you can't see the items you pick up which is quite annoying.
 

FreeRice

This is quite a simple game: you are given a word and have to pick the correct definition, if you get it right you score 10, otherwise you score 0, repeat ad infinitum. However for each point you score the FreeRice people donate a grain of rice to third world countries.
The game tracks how verbose you are too and assigns you a different difficulty of word depending on your past ability. Each time you get three answers in a row right you go up a level, each time you get an answer wrong you go down a level (nb. this only kicks in after you've answered a few questions). My average level was about 29/30, and my maximum level reached was 37. The difficulty of each word is determined by how many people got it right and wrong, and so may change over time too.
The rice is paid for by the advertising on the site, and is donated to third world countries via the United Nations World Food Program.

IQ Test

So this blog has been going much longer than I imagined it would. This is post number 100! (That's an excited 100 as opposed to 100 factorial which is a lot bigger). To tie in with the one hundred theme here is a game where 100 is the average score - an IQ test. Admittedly it's an inaccurate measure, and favours more numerate people rather than more intelligent people.

The picture is from my first try, for which I scored 160/160, without understanding several of the questions. Good luck!

Gimme Friction Baby

The worryingly titled Gimme Friction Baby is actually a clever game which balances strategy and skill with a very simple mechanism. The aim is to burst as many bubbles as possible, by decreasing the number on them from three to zero. Balls will bounce around and get gradually slower and slower (possibly the friction referenced by the title), before coming to a halt and expanding until they hit something. If a ball bounces back across the baseline then the game is over, and your score is the number of balls burst.
When I started playing I was stuck with a high score of six for quite a while, before fluking my current high score of twenty six. This does seem like the sort of game where it would be possible to score indefinitely if you got good at it, but it's quite entertaining while you're capable of making mistakes.

Sky Blocs

Sky Blocs is a puzzle game which borrows strongly from the 1992 game Pushover. The aim is to knock over all the dominoes and then to hit the flag box and raise the victory flag. As the levels progress more and more objects become available for you to use, which in turn enables more and more improbable domino set-ups!

Agent Scappa pointed out the original Pushover game to me, and I think this is just as tricky (but with a lot better graphics).

Five Differences

Simply a game of spot the difference, but with five differences to find on a whole host of charming, lifelike scenes. This game feels very tranquil, and slightly weird, although I did have to resort to clicking randomly to finish some of the levels.

 

Grow Island

Grow Island is made by the creator of the other Grow games and is still based on the 'find the correct order' principle.
This particular game doubles as an advert for an institute of education in Japan I think, but I didn't read carefully enough to find out.
Although I haven't finished this yet I hear that Naomi has, so many congratulations to her.
 

Portal (Flash version)

Quite a complicated game based on quite a simple idea. You have a gun which fires 'portals' - a yellow one and a blue one. The two portals link to each other - anything that goes in one will come out of the other. Then you throw this portal gun into a game where the aim is to get from the start to the finish of each level, and that's it!
There are hints at the top of each level, telling you how to play, and you should remember things like the speed you go into a portal is the same as the speed you come out of the other end. You can only fire the portals on the white walls, and later on you'll come across lasers, cubes and turrets, which make things even more complicated.
The game is based on a game currently on sale called Portal.

Factory Balls

In Factory Balls you work in a ball factory, creating balls to particular specifications. Drag and drop the balls onto the various tools to create a ball that looks like the stick on each box. It is possible to lose all your balls, before you complete the game, so try to avoid that. For levels where you need to combine paint together you may need to think about how computer printers combine their ink to make colours.
 

The short term memory checker

Try to remember a set of random objects. How many can you remember at once? Beware - many of the objects are similar to other objects.

It seems like my limit is about 11 objects.
 

PastMaster

Test your historical general knowledge and try to traverse from one side of the board to the other.

I managed to fail twice at level one before making it to level two. Perfect training if you're thinking of being on Eggheads!
 

Backflip

Use the mouse to drag a path through the black and white tiles. Any tiles that your path goes through will be flipped over, changing the colour from black to white or vice versa. The aim is to get all the tiles in each row the same colour, it doesn't matter that the different rows are different colours from each other. You can create your own levels and play levels that other people have made too.