Game Details 4: Credits

Heli-Cats uses a credits system that rewards performance and time spent playing. In the full game, credits earned are displayed as USER and SYSTEM credits towards the top right of the mode select screen. Players earn 1 USER credit for every mission cleared per Arcade run, or for completing a Trial Mode run. SYSTEM credits are unlocked for every hour spent in either Trial or Arcade.
The first entry credit at the Select Heli screen is always free. The number of continues available in Arcade is the sum of USER and SYSTEM credits. SYSTEM credits are permanent, meaning they will always be available as continues for every new Arcade run. This allows even beginners to eventually build a comfortable stock of credits simply by playing the game. With an increase in skill over time, players should reach a point when USER credits become quite plentiful.
In addition, USER credits have an important secondary function that will be explained later.