The space in the game should not be a strictly severe territory. The player should get some candies as well.
The following is a list of all the bonuses that the player gets in the game:
Flag with a star: This is a collectible item. It gives some rewards in points to the player and lets him brag about it among friends. But this rock, the one having a blue flag with a star on it, is found very rarely.
Green container: This is another collectible item. It is a small bottle-shaped metallic box. It gives less value of points, but contains some drops of text information that the HUD displays on the screen. It includes only few words. As you might guess, the object is a message in a bottle, a way to create a subplot inside the main story. Inside the green containers, there can be messages from the Danube, exposing the current situation aboard. Alternatively in the containers, there can be a message from the ship that was lost in space long ago; let's call the ship Amsterdam. There...