TetriNET: Special Blocks
| Letter | Name | Type | Description | Frequency |
|---|---|---|---|---|
| A | Add line | + | This adds a "junk line" to the player's field that you choose. | 32% |
| C | Clear line | - | This clears the bottom line in the playing field. | 20% |
| B | Clear specials | + | This removes all special blocks from a players field. | 14% |
| O | Block bomb | + | When used on a player, this clears 3x3 portions on their field anywhere there are 'o' blocks. Any blocks that were in the 3x3 areas are scattered around the field. | 14% |
| R | Clear random | + | This removes 10 random blocks from a player's field. | 12% |
| Q | Block quake | + | This causes each of the lines of blocks on a player's field to randomly shift left or right or not at all. | 6% |
| N | Nuke | - | This removes all blocks from a playing field, giving the player a "fresh start". | 1% |
| G | Block gravity | - | This "gravity" block takes all the blocks on the field and "pulls" them toward the bottom of the field, eliminating any gaps in the blockstack. | 1% |
| S | Switch fields | + | This switches your playing field with another player's field. If either block stack is over 16 blocks high, the stack will be lowered. | disabled |
Important: Blocks with the type '+' are attack special blocks; use these on other players. Blocks with the type '-' are defense blocks and should be used on yourself because they are good. You can also press the letter 'D', and the first block in your inventory will be discarded. When your inventory becomes full, any special blocks you get cannot go into your inventory.