Xeno Tactics

Yet another Tower Defense game: Xeno Tacics.

An obvious clone of Desktop Tower Defense (even down to the critter waves), but with a twist: the game has six levels, and you can't access the next level until you've completed the previous. Not sure why you score points in this game, as there's no high score (or there is after the last level, but I've still not beaten it...) - it seems kind of pointless that you score bonus points for releasing a critter wave early (just like, you guessed it, Desktop Tower Defense).

Onslaught 2

Another Tower Defense game (which seem to be all the rage now): Onslaught 2.

Not that many differences to its predecessor, but the new tutorial and help screens are a neat addition. Still no sound though...

Tactics 100

A different kind of Chess: Tactics 100.

It's like a cross between Chess and Final Fantasy Tactics (or similar game). Move your pieces (of which you've got four different kinds) and attack your enemy. First you move all your pieces, then your enemy moves his. Use the special abilities to full effect to ensure victory.

Luminaria

Blast them away: Luminaria.

The game plays somewhat like Asteroids. Move with the keyboard, aim with the mouse, and shoot anything that moves.

Slingeren

Strange little game: Slingeren.

Another "filler" game: You point and click the mouse to shoot one of your two rubber bands, and swing across the "landscape" (as you can see from the screenshot, there's not a lot of eye candy, to say it mildly). Simple, but fun.

Tower's Tactics - Deity's Throne

RTS meets RPG: Tower's Tactics - Deity's Throne.

You start with a single hero and up to two soldiers. Each quest/level is played in a real-time-strategy kind of way. Your troops get experience and learn skills (special attacks, healing, etc.).

The game saves your progress, so you don't have to start all over again whenever you play it.

Nightstrike

Defend your bunker: Nightstrike.

As usual for the "castle defense" subgenre, you earn money to upgrade your weaponry. This game, although the graphics are quite good, is somewhat lighter than similar games - and that's not necessarily a bad thing.