Various fixes and improvements.

Prestige system: reset all masteries to unlock stronger versions and gain a permanent gem bonus.
Daily reward: tap once a day for 100 free gems.
Gem economy: gem drop rate significantly increased, and stat mastery prices slightly lowered.
Abyssal enemies added to very late waves.
Shop overhaul: cleaner layout, simpler navigation.
General balance adjustments.

Various improvements and fixes.

Various improvements and fixes.

- New enemies.
- New masteries.
- New difficulties.
- Various fixes and improvements.

Elite enemies have been replaced by a smoother difficulty progression (through "enhanced" enemies).
Two new colors (with the related difficulties) have been added.
Various fixes and improvements.

The early game progression has been accelerated.
New revival feature at player's defeat.
Reduced the frequency of "shield attack" in Arcadium Madness (boss).
Fixed an issue where the player could obtain pickups (e.g. hearts) after defeat.
Various fixes and improvements.

Skills are now fully charged from the start of a match.
Bosses will now get stronger even after red stage.
Fixed an issue where glowy aliens didn't reward extra energy.
Various improvements and fixes.

The new masteries "missiles buff" & "skill energy buff" have been added.
The new spaceship "Uranus" has been added.
The spaceship "Artemis" now increases drop rate by 25% as well.
Fixed a bug where other audio sources (e.g. music players) were muted while playing the game.
The masteries for "bonus buffed versions" had their chance increased per level.
Small improvements.