In the first game and its expansion pack, the levels are not in groups; instead, each level has a corresponding rank number. Players can only enter levels close to their current rank, which usually provides a choice of 5 or so different levels to play at any time. This means that experienced players cannot play earlier levels, and beginners can't play on more advanced levels. When the last level is completed, all others are unlocked to play, regardless of rank.
The current rank is increased when the player completes a race. The amount of credits the player earns on the race is directly linked to the resulting rank increase. The increment can be from 0 to 5. The intervals for a rank increase, by difficulty, are specified on the
GENERAL.TXT data file, on the 8th line: 20'000 on easy, 35'000 on medium, 40'000 on hard.
|Rank increment||Easy difficulty||Medium difficulty||Hard difficulty|