This submission improves ShesChardcore's run by 228 frames, due to a route change and micro-optimizations.

To achieve the best ending, you have to earn $131,072 (0x20000 in hex). For this purpose, you can consider various methods, and the fastest route is not so obvious. I used a slot machine (and a video poker to manipulate RNG).

RNG of this game is quite different from the one of GB version. RNG has a "RNG index" and a "RNG table". Every time RNG generates a random number, it increments RNG index. And, RNG index is also incremented at each frame while you are staying at the casino hole. And, every time RNG generates a random number, it "scrambles" RNG table. Consequently, it is not so easy to manipulate RNG as GB version.

I read the game code, and wrote a solver to achieve the best ending. I found a 3-step solution which uses a video poker and a slot machine. According to my solver, it is a unique 3-step solution. But I'm not sure whether it is fastest, due to losses for cursor movement. There are also many 4-step solutions, and some of them use only slot machines. (example)

Here is a RAM map:

Here is a ROM bank #6 map (bank ID is 0-indexed):

Here is a ROM bank #7 map:

By the way, you can get a royal flush in the video poker, and the game says you can earn $400,000 by a royal flush. But actually, the prize of video poker is treated as a unsigned 16bit value and it overflows (400000 mod 65536 = 6784):

feos: Claiming for judging.

feos: Thanks to ViGadeomes for the review once again, accepting over [4944] NES Caesars Palace "best ending" by ShesChardcore in 00:41.35.

despoa: Processing...