Kirby 64: The Crystal Shards cheats and cheat codes for Nintendo 64

This game another title is Hoshi No Kirby 64.

Unlock sound test option:
Finish the game once.

Unlock Boss Battle and Movie Viewer modes:
Reach 100% on your file at the file selection screen (find all crystals)

Unlock normal mini-games difficulty:
Finish the mini-games in easy mode.

Unlock hard mini-games difficulty:
Finish the mini-games in normal mode.

Unlock intense mini-games difficulty:
Finish the mini-games in hard mode.

Unlimited lives:
Get the star still at the start. Hit Start and choose "Try Again". 
Go to the same stage and go back to get the star again. 
Repeat as many times as you want.

Combos:
Stone: Rock
Stone + Bomb: Dynamite
Stone + Cutter: Stone cutter
Stone + Ice: Skating soap
Stone + Needle: Drill
Stone + Spark: Electric rope tied to stone
Stone + Stone: Big rock

Ice: Ice blower
Ice + Bomb: Snowman bomb
Ice + Cutter: Skate
Ice + Ice: Snowball
Ice + Needle: Snow flake
Ice + Spark: Refrigerator

Fire: Fire ball
Fire + Bomb: Fireworks
Fire + Cutter: Fire sword
Fire + Fire: Fire bird
Fire + Ice: Ice and fire blower
Fire + Needle: Bow and arrow with fire arrow
Fire + Spark: Solar powered fire
Fire + Stone: Rock shooter

Bomb: Bomb
Bomb + Spark: Light bulb
Bomb + Cutter: Bomb that hooks onto opponent
Bomb + Bomb: Missile launcher

Spark: Electric shock
Spark + Cutter: Electrical double bladed sword
Spark + Spark: Electric ball

Cutter: Boomerang
Cutter + Cutter: Boomerang with blades

Needle + Bomb: Spikey bomb
Needle + Cutter: Bite (commercial)
Needle + Needle: Spikey gadgets
Needle + Spark: Thunderbolt
Needle: Spike ball