Some new images have been added, including an image of the Tech Shop, where you can buy upgrades.
Now I'm working on expanding the mob database in a way that it requires more strategy to beat them, and the use of all tower types. This way you don't have one tower that is barely at some point, and the game makes you try other tower combinations.
Some of the ideas:
Swarm mob: when he dies, he spawns a bunch of small weak little dudes. This makes the splash damage tower a lot more useful as it would take a bunch of shots from a regular tower to take them down.
Slime mob: or more like a snail, it leaves a trail of slime that makes other mobs faster. The way to counter this is to use a burn tower, as It will set fire to the slime and burn all enemies that touch it.
Conductor mob: this one spawns with a random effect, like speed up or extra defense, and gives the effect to nearby mobs. The thing is, he passes all effects, even the ones you use. So hitting it with a burn or cripple would hit all these mobs at once.
Disables: he disables nearby towers, so you should use towers with higher range to get this guy, or stun him so others can take him down
These are just a few I have in mind. In the next days I'll be implementing them
