Yes you can, except from promotional vouchers.

Merging fleets keep the debris collecting status of the fleet already present at the destination.

Currently we don't have any Astro Empires app. But as a browser game is possible to play in any browser, including any phone with a browser. The game have a special layout when playing in a phone adapted to those devices.

The reason for this is that supporting graphic package is a barrier to making optimizations or adding new feature. At the time the game was launched the graphic package was useful to speed up page loading, but by now with faster browsers and making bette...