Save Block

Save Blocks are items that appear usually in Mario RPG games.

Super Mario RPG: Legend of the Seven Stars
The Save Blocks in this game are much more 3D in shape. They are golden in color and has a large star at the top. It also as a big "S" in rainbow color on different sides of the Save Block. The Save Blocks in this game are also usually found in Inns or before a boss fight.

Paper Mario
Save Blocks have a much more different design in this game since the last. The Save Blocks are more rainbow in color with a giant "S" in the color white and is on all four sides of the Save Block. Save Blocks in this game are usually found with Heart Blocks before a new area or before a boss fight. Unlike Super Mario RPG: Legend of the Seven Stars, Save Blocks in this game must be it from underneth in order to activte it.

Paper Mario: The Thousand Year Door
Save Blocks are similar in design to the ones in Paper Mario. They also appear in newer areas, before boss fights, and next to Heart Blocks (though Mario must now pay coins to use Heart Blocks in this game).

Super Paper Mario
Save Blocks once again return in this game retaining their design from the previous Paper Mario games. However, Save Blocks in this game appear to be a lot less common than in the last games (probabilty since in Super Paper Mario, each Chapter is divided into sections and whenever Mario completes a section, the game saves the game).

Mario and Luigi: Bowser's Inside Story
Unlike all of the other Mario and Luigi games, Save Blocks replace the Save Albums in this game. Outside of Bowser, Save Blocks looks similar to the Paper Mario ones and inside of Bowser, Yellow Emoglobins replace Save Blocks.

Paper Mario: Sticker Star
Save Blocks return in this game. Much like with the ones from Super Paper Mario, they play a much smaller role due to the game itself saving many times. But like the origionals, Save Blocks are usually found next to Heart Blocks before boss fights.

Trivia

 * Save Blocks from the Paper Mario series looks similar to Fake Item Boxes from Mario Kart 64.