The towers can all be upgraded multiple times and can branch off into different "specializations" as well which allow for varying forms of gameplay. The warriors tower actually places warriors on the field to act as roadblocks for incoming enemies.
New towers and abilities are unlocked at a rate that feels natural and not sluggish. Meaning advancement in the game does not feel hobbled or slowed down but allows the player to feel as though they are advancing at such a pace that they want to keep playing.
Just like the mobile version of the game there are game items that can be purchased for the game. There are extra stages as well as extra heroes that will need to be purchased with cash in order to use them. While not inherently bad it is a bit of a downside to have bits of a flash game locked behind a paywall.
Due to the fact that the player can not mine upwards, there needs to always be an avenue of escape to get back above ground. Whether this is leaving enough fuel in order to fly up or leaving dirt laid out in a certain way that the player can climb up.
Each time the game is started new, the dirt that one will be mining in is randomly generated. This allows for a new experience each time played but also a way to make each individuals experience different. This way the game has a longer shelf life thanks to each experience being different from the last.
The story is told through mysterious transmissions that the player will receive at random, making for an intriguing story that is slowly drip fed to the player, which is a good reason to keep playing as to find out what is happening.
There are two different control schemes for the game, the player can use the arrow keys or the mouse. This allows the player to choose what works bets for them while also providing good controls for both.
Users have reported to being able to beat the game in around an hour. While the random generation allows for some replayability, the time that this game can be beaten means that a single play-though can be finished easily in one sitting. So for those looking for something to sink more time into, may want to look elsewhere.
The musical score along with the sound effects in the game can become annoying with time as there is little variation, meaning the sounds and music repeat over and over again, which can be frustrating.
For what starts out as a seemingly normal flash game warps into an adventure where the player has no idea what will happen next. This sense of wonder is meant to give the user an experience not often found in modern games.
Even though the game has had success and reached popularity the title was never monetized, meaning that it is completely free for anyone to experience as long as they have a web browser that they can play it in.
When reaching areas such as the text adventure segment users may find that the difficulty has spiked, making for what can sometimes be frustrating play.
This game lends itself well to being played in short bursts and limited downtime. Enemy waves do not take long to complete and whole levels can be done in minutes. this makes for a game that is great for a short office break or just something to do in between other more important matters.
The game is easy to understand and is well balanced in difficulty that the player comes to the conclusion easily that if they lost it is due to a failing on their part and not poor design of the game. This is a good balance of design and difficulty that makes it great for anyone to enjoy the title.
It's easy to learn the basics - just select the ships you want to fight with and click where you want them to go. Clicking once will send half the the selected ships, and double clicking will send all of them. Other mechanics aren't quite as simple, but still are very easy to grasp (for example, if you are surrounding a planet which you are attacking you get a significant boost to your damage).
While beginners will throw around ships, not caring what types of planets to attack, more veteran players will need to play strategically, taking and holding defense planets to help their front line. Finding a few large strategically placed economy and naval stars will be essential to a victory if playing against harder AIs.
You can create your own maps which you can play on, including 7 types of planets, 5 different planet sizes, and adding up to 5 players. The editor is easy to work with - adding planets is as simple as clicking on a blank space, and editing them can be done by clicking an existing planet again.