Casual games (both on-line flash games, and mobile) still enjoy special popularity.  And the atmosphere of the game is created first of all by the game environment. It will force the user to steep into the game world. As well in the social game Fishdom (the award-winning game from Playrix Ent.) the inimitable atmosphere was created by means of vector backgrounds.

Each background consists of base stage and 3 up 4 upgrades: user can improve his watertank at any time.
Some backgrounds with animated upgrades:

Casual games are always demanded. And attractive game for the user is done first of all by pleasant graphics. On this position player pays attention first of all. The casual game Fishdom differs by lovely and pleasant casual vector objects.