Hidden sky
The play area is 40 character squares high, but only the bottom 38 (y-coordinates 2-39) are ever displayed. In other words, the top two rows (y-coordinates 0 and 1) of the play area are always hidden - even though the graphic data for them exists and is not garbage.
However, the top two rows of the play area are not very interesting; for the most part they are the same as the third and fourth rows. The only exception is the area above the Hotel Royale. Normally that area looks like this:
But if you could see all the way up to the top row (y-coordinate 0), it would look like this:
Cash chances
The banknotes flying through the city streets are denominated in $1, $5, $10 and $20 amounts. However, they are not distributed evenly across those amounts. The probabilities of obtaining a banknote of a particular value are as follows (see
25039):
$1 - 1 in 2 (0.5)
$5 - 41 in 128 (0.32)
$10 - 19 in 128 (0.15)
$20 - 1 in 32 (0.03)
Silent hangup
Pressing 'H' while Sam is on the phone makes him hang up. No message is displayed to confirm that event, but the unused message at
27113 (I HUNG UP) indicates that there probably used to be. That unused message is used by the unused routine at
31284, which queues the message urgently and plays a sound effect. Perhaps this feature was removed before the game was released because pressing 'H' while reading a phone message would make the message fly by too quickly, making it difficult to take in.
Bullet speed
As Sam gets more money, the snipers' bullets fly faster through the air (see
26075).
The bullets are slowest when Sam has less than $256; they are bit faster when Sam has between $256 and $511; they are a bit faster still when Sam has between $512 and $767; and they are fastest when Sam has between $768 and $1023 (twice as fast as when Sam has less than $256, in fact).
The good news is that should Sam be lucky enough to get past the $1023 barrier - a difficult task given that the sum total of the cash bonuses in the game is only $550 - the bullets return to their slowest speed.
Gangsters and disguises
The gangsters at no. 19 will allow Sam to enter their house and roam freely inside if he uses disguise no. 7 (the man with a cigar):
This disguise enables Sam to pick up the ringing phone on the top floor of no. 19; if he answers it as ED (press 'E' when asked who's there), a voice says 'OK ED - THE FAT MAN HAS THE KEY TO NO 27'. The disguise doesn't fool the gangsters for ever, though: after Sam has crossed the roof of no. 19 using the hook (and someone below says 'CRUISE WAS DRESSED AS THE OIL MAN. DONT LET ANYONE PAST'), the disguise becomes useless (see
64836).
Unfortunately, none of the other gangsters are ever fooled by any of Sam's disguises.