Alpha 1.4

General:

• Added store. You use the points you earn when playing to purchase upgrades to make yourself stronger.
• Added level system to increase difficulty over time in challenge and standard mode. Every level, it gets harder to survive, but you earn more points.

Gameplay:

• Changed the color shift when enemies get damage. The more damaged the enemy is the lighter the damage color flash will be
• Optimized laser and bomb collisions
• Changed names of standard difficulty modes