Commander Keen: Tower Defense
The aliens are trying to get to something (in this case, it's a sandwich) and you have to stop them by building towers. That's pretty much it.
Basically, you need to build platforms on which you can place different type of weapons that deal different type of damage, shoot with different speed or are even limited on which direction they can shoot. For example, the flamethrower weapon can deal great amount of damage, but shoots only in four directions, while the zappers can shoot in all directions, but deal less damage. 3 levels of upgrades are planned for each weapon.
Enemies gives you points (money). They have health bar and vary from moving speed and damage they can take. For example, Slugs are slow and weak. They give you like 2 points and are easy to kill, but they come in swarms some times. Blooguards are stronger than Bloogs, both are faster than Slugs, but they come in smaller amounts and gives you a bit more points. And so forth.
The game pretty much works now. It's based on Unity engine source code, so it's pretty much multiplatform, supports svga graphics and such. However, it's still far away from completion. It needs more balancing, more enemies, sounds etc. Keen 6 and Keen 4 tileset are definitely to be included (almost done in fact). We'll see about Keen 5 and maybe we'll include 7, 8 and 9.
