Quelle:
SmashWiki, the Super Smash Bros. wiki
Super Smash Bros. Melee
Stage 1: 1 vs 1 (Opponent chosen at random from a list of characters)
Stage 2: 2 vs 2 (Ally is chosen at random from a list of allies while the team the player is fighting is randomly picked from a list of 29 teams)
Stage 3: Target Test
Stage 4: 1 vs 1 (Opponent chosen at random from a list of characters)
Stage 5: 3 vs 1 Giant Character (Allies chosen at random from a list of allies while a giant character is chosen out of a list of giant characters randomly)
Stage 6: Snag the Trophies
Stage 7: 1 vs 1 (Opponent chosen at random from a list of characters)
Stage 8: 1 vs 10 of the same character (Teams are chosen at random out of a list)
Stage 9: Race to the Finish
Stage 10: 1 vs 1 Metal character (Opponent chosen at random from a list of metal characters)
Stage 11: 1 vs Master Hand and sometimes Crazy Hand if certain conditions are met.
Quelle:
SmashWiki, the Super Smash Bros. wiki
Super Smash Bros. Brawl
Level 1 - The Legend of Zelda - Team or Normal
Level 2 - Yoshi, Donkey Kong (Minor Mario Characters) - Giant (Yoshi series only, 2 allies (helped by the Donkey Kong characters)), Team (Donkey Kong universe only, Donkey & Diddy Kong are fought alphabetically), or Normal
Level 3 - Pokémon - Giant (1 ally), Team, or Normal
Level 4 - Fire Emblem or EarthBound (Originally Japanese-only RPGs) - Giant (1 ally), Team, Multi, or Normal
Target Smash! (same level as the chosen difficulty)
Level 5 - Kirby - Giant (1 ally), Team, Multi, or Normal
Level 6 - Metroid or Pikmin (Planet explorers) - Giant (no allies), Multi, Metal, or Normal
Level 7 - Star Fox or F-Zero (Spaceship flyers) - Giant (no allies), Team (Star Fox universe only, Captain Falcon is a random ally, order of opponents are Fox, Wolf, and Falco)
Level 8 - Super Mario Bros.- Giant (no allies), Team, Multi, Metal, or Normal
Level 9 - Game & Watch, Kid Icarus, Ice Climber or R.O.B. (Obscure classic characters) - Giant (no allies), Multi, Metal, or Normal
Level 10 - WarioWare, Metal Gear or Sonic the Hedgehog (non-Nintendo characters, or portrayed that way in-universe) - Giant (no allies), Multi, Metal or Normal
Target Smash! (1 level higher, if played on Intense, level 5 again)
Level 11 - Free for All - Free for all with three computers
Level 12 - Master Hand/Crazy Hand Battle - Enemies have stamina based on difficulty selected