Basic Game Loop

• Added a player life system
• Player starts with 3 lives
• Every death takes away 1 life
• Extra lives can be collected through powerups
• Dropping below 0 lives makes you transition to a "game over" screen
• Set max lives to 9

Powerups

• Added extra life powerup
• User Interface
• Added life counter to in-stage UI

Known Bugs

• Game sometimes crashes when transitioning to the upgrade shop.
• Sound gets choppy right around score 7000 (no idea why just yet).
• Total not showing on in stage user interface.
• Did I miss any?  Please let me know.

Feedback Request

• Was the game fun?
• How can we improve?
• Should you only receive shield powerups if you have no shield?