Select one of the four bases (Α, Β, Γ, Δ) in order to start the game. Every base is unique and has different stats as follows:

Alpha (Α)
Resources:

Mine recovery speed:

Collecting speed:

Experience gain:

Base upgrade cost:

Base upgrade time:

Explorers' speed:

Beta (Β)
Resources:

Mine recovery speed:

Collecting speed:

Experience gain:

Base upgrade cost:

Base upgrade time:

Explorers' speed:

Gamma (Γ)
Resources:

Mine recovery speed:

Collecting speed:

Experience gain:

Base upgrade cost:

Base upgrade time:

Explorers' speed:

Delta (Δ)
Resources:

Mine recovery speed:

Collecting speed:

Experience gain:

Base upgrade cost:

Base upgrade time:

Explorers' speed:

After selecting base, click anywhere on the map in order to exit the base view. On the small monitor to the right you will see different units available for purchase. Buy a collector and click the stardust mine , then click the "collect" button, which will also appear on the small right monitor. You collector will start gathering stardust for you. When you have enough stardust, you will be able to buy more collectors, as well as soldiers, towers and explorers.
Soldiers can either defend you base or attack enemy bases. Towers can only defend your base. Explorers can explore the two uninhabited islands and find additional bonuses, but they might also encounter dangerous situations and get lost. They can also explore your island for resources when the mine is depleted. This way you can get more resources, without waiting for your mine to recover. Sending xplorers to the uninhabited islands, is the only way to increase your critial hit chance.
Send soldiers to enemy bases and win battles. Click on any of the enemy bases and on the small right monitor you will get information regarding the base, as well as attack button and arrows to adjust the desired amount of soldiers you want to send. Beware, soldiers can also encounter unfortunate events. On the big monitor (map), you will also notice two icons representing soldiers and towers. By clicking them, you will see the stats of the respective unit on the small right monitor. If you have any stat points, you will be able to increase the stats of the towers or soldiers by clicking the plus (+) buttons. You get a stat point everytime you level up. If you don't use your stat points, your enemies will get stronger.
The small left monitor shows data of you own base.
Click on your base and the upgrage button will appear on the small right monitor . Upgrade your base so you can get more units (soldiers, collectors etc.).
You will also notice "Won" and "Lost" counters. They will count won and lost battles. At level 50, based on the won/lost result and the base you selected, different endings will appear. There's also alternative ending for "Tie" result.

Α
Β
Γ
Δ