Vector TD is a better Tower Defense game. Your objective is to destroy the enemy vectors before they can reach the exit of the level. You loose one life for every vector that reaches the exit. The game ends when you have no lives left or when you beat all the levels of the game.

One remarkable aspect of this game is that it has its maps categorized in beginner, normal and extreme maps. The beginner maps for instance have only one entrance and exit to the level while the extreme ones have two of them. The extreme ones are also more straightforward meaning that you have less space to place your towers well.

You may build four kinds of towers that have all their distinctive strengths and weaknesses. Ever colored tower is strong against his own color and weak against another color making it extremely important to have a solid mix of all kinds of towers at your disposal.

The green, red and violet towers can be build in three different versions while the blue one has only two different models available. Each of the 11 towers that can be build can be upgraded as well to increase range and damage output.

Every now and then a bonus object is among the enemy vectors. If you beat it you get a bonus point that you can use to either increase the damage output of your towers, increase the range of your towers, increase the interest rate or add five lives to your contingent.

I got to level 50 of 50 in the first beginner map in my first try and will give the normal maps a go later today. This is really a great time waster. The only annoying thing is the commercial before the actual game.