An unlockable stage is a stage that is not available at the beginning of the game, (unlike a starter stage), but must be unlocked.
Super Smash Bros.
| Stage | How to Unlock |
|---|---|
| Mushroom Kingdom | Beat 1-player mode with all 8 starter characters and play every other stage at least once. |
Super Smash Bros. Melee
| Stage | How to Unlock |
|---|---|
| Eagleland - Fourside | Play 100 VS. matches |
| F-Zero Grand Prix - Big Blue | Play 150 VS. matches |
| Past Stages - Dream Land | Clear Target Test with all 25 characters |
| Past Stages - Kongo Jungle | Clear 15-Minute Melee |
| Past Stages - Yoshi's Island | Hit more than 1350ft/400m in Home Run Contest |
| Kanto Skies - Poké Floats | Play 200 VS. matches |
| Mushroom Kingdom II | Unlock the Birdo or Pidget trophys |
| Planet Zebes - Brinstar Depths | Play 50 VS. matches |
| Special Stages - Final Destination | Clear every Event Match |
| Special Stages - Battlefield | Complete All-Star Mode |
| Superflat World - Flat Zone | Complete Classic Mode with Mr. Game & Watch |
Super Smash Bros. Brawl
| Stage | How to Unlock |
|---|---|
| Donkey Kong 75m | Unknown |
| Big Blue | Unknown |
| Electroplankton | Unknown |
| Flat Zone 2 | Unknown |
| Great Sea | Unknown |
| Green Greens | Unknown |
| Green Hill Zone | Unknown |
| Jungle Japes | Play on any Melee stages in 10 Vs. matches |
| Luigi's Mansion | Play with Luigi in 3 Vs. matches |
| Pokémon Stadium (original) | Play on Pokémon Stadium 2 in 10 Vs. matches |
| Spear Pillar | Unknown |