Tetris Block Names
Reference the common letter IDs, neutral names, simple diagrams, rotations, and strategy notes for each falling block shape.
| Letter ID | Neutral UI name | Diagram | Strategy note |
|---|---|---|---|
| I | Long | Use for long lane clears. | |
| O | Square | Use for flat two-wide spaces. | |
| T | Corner | Use for notches and pivots. | |
| S | Left Zig | Use on matching left-leaning steps. | |
| Z | Right Zig | Use on matching right-leaning steps. | |
| J | Left Hook | Use for side pockets and ledges. | |
| L | Right Hook | Use for mirrored hook placements. |
Letters and neutral labels
The letter IDs are compact and useful for experienced players, while neutral labels are easier for beginners. This site shows both. The gameplay UI can say Long or Square, while guides can also mention I or O for players who already know those shorthand names.
Rotations
Most pieces rotate through four states, although some states look repeated or mirrored. Learning rotations matters because a piece that looks awkward in one orientation may become the exact repair tool you need after a turn.
Strategy notes
Names are only useful when they help decisions. Think of Long as a lane-clear piece, Square as a stabilizer, Corner as a notch tool, Zig as a step tool, and Hook as a ledge tool. That simple vocabulary is enough for most beginner improvement.
Frequently Asked Questions
What block names does this site use?
The site uses neutral labels: Long, Square, Corner, Left Zig, Right Zig, Left Hook, and Right Hook, alongside the common letter IDs I, O, T, S, Z, J, and L.
Why use neutral names?
Neutral names are easy for beginners and keep the interface focused on gameplay rather than branded terminology.
Is Tetris.eu.com an official Tetris website?
Tetris.eu.com is an independent browser-based block puzzle website. We are not affiliated with, endorsed by, or sponsored by The Tetris Company, Tetris Holding, or any official Tetris rights holder. Tetris is a trademark of its respective owner.