This is a decent tower defense game, if you're into the genre. I got it in a bundle, I would not recommend it at full price though.

There are only 10 levels, but a global upgrade system and 3 difficulties reward extra playthroughs. There are 5 items/abilities that have cooldowns which are very helpful. To be clear, this isn't on par with something like Defense Grid, but it was still fun.

Some negative points that stood out to me:

Restrictive tower placement options along sides of pre-determined roads/paths -- no creating mazes here
There's no indication of a tower's footprint, so finding the closest you can place towers together is trial and error (and you can inadvertently block a preferable tower placement with a nearby tower)
Only 5 types of towers and no customization options (beyond special attacks that happen at random)
Minor UI annoyances -- upgrade notices hiding behind the tower's current rank, hard to see upgrade notices with all the weapons firing, tower types are hard to differentiate
Lack of at-a-glance information such as how much a tower costs to upgrade and/or repair, and what an upgrade will change
Poor English translation
Little to no battle sounds when zoomed out to any reasonable degree
Hard to tell when you lose a tower vs. an enemy unit blowing up
If you don't spend an upgrade point right away, it disappears and you'll have to replay the level to get it back
The annoying "sell everything during the last wave to get money" tactic

Despite all of that, it was still a pretty good game. It's not best in class, but it's nowhere near bottom of the barrel either. The visuals are good for a tower defense game and it doesn't feel like it belongs on a mobile device. I can't imagine playing this over and over again beyond the 3 difficulty levels, and there doesn't appear to be modability or additional maps available.

I took me around 3 hours to get through the 10 map campaign on Normal difficulty, which included a couple of the "minigames" (the same maps with specific restrictions, but you can earn cash to bolster your population).

This is a decent tower defense game, if you're into the genre. I got it in a bundle, I would not recommend it at full price though. There are only 10 levels, but a global upgrade system and 3 difficulties reward extra playthroughs. There are 5 items/abilities that have cooldowns which are very helpful. To be clear, this isn't on par with something like Defense Grid, but it was still fun. Some negative points that stood out to me: Restrictive tower placement options along sides of pre-determined roads/paths -- no creating mazes here There's no indication of a tower's footprint, so finding the closest you can place towers together is trial and error (and you can inadvertently block a preferable tower placement with a nearby tower) Only 5 types of towers and no customization options (beyond special attacks that happen at random) Minor UI annoyances -- upgrade notices hiding behind the tower's current rank, hard to see upgrade notices with all the weapons firing, tower types are hard to differentiate Lack of at-a-glance information such as how much a tower costs to upgrade and/or repair, and what an upgrade will change Poor English translation Little to no battle sounds when zoomed out to any reasonable degree Hard to tell when you lose a tower vs. an enemy unit blowing up If you don't spend an upgrade point right away, it disappears and you'll have to replay the level to get it back The annoying "sell everything during the last wave to get money" tactic Despite all of that, it was still a pretty good game. It's not best in class, but it's nowhere near bottom of the barrel either. The visuals are good for a tower defense game and it doesn't feel like it belongs on a mobile device. I can't imagine playing this over and over again beyond the 3 difficulty levels, and there doesn't appear to be modability or additional maps available. I took me around 3 hours to get through the 10 map campaign on Normal difficulty, which included a couple of the "minigames" (the same maps with specific restrictions, but you can earn cash to bolster your population).