Super Mario RPG: Legend of the Seven Stars/Secrets

Menu screen hints, tips and tricks
In game, press to open the menu, then enter the following:, , , , , , ,. You will see Toad appear with messages.
 * Only available on the Japanese version.

8-bit Mario
At only one point in the game, in Booster Tower, you will turn into 8-bit Mario. You'll be able to walk around the room like normal, but with a different sprite. The room in which this takes place is the one with the switch that opens the passage in Booster Pass; there is a large curtain near the exit. Go to the right side of the curtain and walk through it to the left. As you come out you will be transformed.

Nintendo character appearances
Look at the northeast corner of Hinopio's shop in Barrel Volcano.
 * F-Zero and Star Fox

Just after you get the second Star Piece (the green one) from fighting with Bowyer, head back to Rose Town and into the Inn where you first saw Geno. Rest at the Inn, and when you wake up Link will be sleeping in the bed next to you. If you try talking to him, a recognizable sound will play. Link will disappear only if you leave the town, but if you take another nap, he will be there until you get the third Star Piece.
 * Link

There are two Samus references:
 * Samus
 * 1) After you get the fifth Star Piece, head back to Mushroom Kingdom's castle. Head into the guest room and you'll see Samus sleeping in the bed. If you interact with her, she says she's resting for Mother brain.
 * 2) At the top of Booster Tower, look with the box where Booster and his Snifits are talking and you'll see a Samus doll.

Fast and easy leveling method
Find a Starman power-up chest (check the guide, save a lot, or play through the game twice) near a Save Point. Save the game, grab the power-up, kill as many groups of enemies as you can, then get into combat and die. You retain your any experience you gained and the Starman will be back in the box.

Geno's 9999 damage attack
Using Geno's "Geno Whirl" attack, you can deal 9999 damage to a variety of enemies (primarily bosses are immune to this timing). Use Geno Whirl and use a timed attack (press ) right before the wind animation leaves the screen. You'll notice a cracking sound similar to Mallow's Thunderbolt timed attack.

Infinite Money
In Rose Way, use the coin filled chests at the last section (with the Shy Guys standing on top of each and the Crooks running around). Even if you empty them, they will refill if you exit and reenter. You can collect up to 25 coins with each run.