Game details
- Players
- 1–2 players
- Category
- Arcade
- Creator
- Tailorgame
Find the fit. Clear the stack. A falling-block challenge with Marathon, a 40-line Sprint and a shared two-player Relay.
Open the game, choose online play, create a private room and share its invitation link with your friend. Players sign in before joining. The public share link below opens the overview; it does not join a private room.
History and origins
The falling-block lineage was popularized by Tetris, created by Alexey Pajitnov in 1984. Stackfall is an original genre adaptation with its own identity, simple rotation kicks and scoring. Its Marathon emphasizes survival, Sprint targets forty lines, and the later cooperative idea changes the rhythm: two people alternate pieces on a shared board without a gravity timer. It is not an official Tetris product.
The Tailorgame edition
Fit falling four-square pieces into a 10 by 20 well. Complete rows to clear them. Arrows move and soft drop; Up or X rotates clockwise, Z counterclockwise, C holds, Space drops, P pauses solo. Marathon gets faster; Sprint ends at 40 lines. Online Relay alternates pieces on one shared board with no gravity timer and a joint 40-line goal. Game controls are in English.
Full playing guide
Fit, clear, repeat
Fit four-square pieces into a 10 × 20 board. Full rows clear. Seven shapes arrive in shuffled bags; hold once per piece and preview the next three. The outlined ghost shows the landing. Marathon speeds up every ten lines. Sprint finishes at 40 lines and counts active playing time.
Controls and scoring
Arrows move and soft drop. Up or X rotates clockwise, Z counterclockwise, C holds, Space drops and P pauses solo. Touch controls are labeled; game controls are in English. Clear one, two, three or four rows for 100, 300, 500 or 800 × level, plus consecutive-clear bonuses. Soft drop earns one point per row; hard drop earns two. Landing delay is half a second, with at most fifteen resets. Rotation uses simple wall/floor kicks and no special spin bonuses.
Play together, finish together
Online Relay is a private synchronized game for two players. Alternate pieces on one shared board and clear 40 lines together. There is no gravity timer. Adjustments are local previews until Drop; the server validates the placement. Either player can end the Relay; the host starts, rematches or closes the room. Online results stay in the room. Solo runs are not saved; device best scores persist. Solo practice submissions are capped at 100,000.
An original genre adaptation
Stackfall has its own artwork and rules, inspired by the falling-block genre popularized by Tetris. It is not an official Tetris product.
Stackfall rules: falling blocks, Sprint and shared RelayFrequently asked questions
How do I play Stackfall?
Fit falling four-square pieces into a 10 by 20 well. Complete rows to clear them. Arrows move and soft drop; Up or X rotates clockwise, Z counterclockwise, C holds, Space drops, P pauses solo. Marathon gets faster; Sprint ends at 40 lines. Online Relay alternates pieces on one shared board with no gravity timer and a joint 40-line goal. Game controls are in English.
Can I play Stackfall with friends?
Open the game, choose online play, create a private room and share its invitation link with your friend. Players sign in before joining. The public share link below opens the overview; it does not join a private room.
How do I invite someone to Stackfall?
Open the game, choose online play, create a private room and share its invitation link with your friend. Players sign in before joining. The public share link below opens the overview; it does not join a private room.
Is Stackfall free to play?
Playing supported games is free. You can read this page without an account; sign in when you choose Play.
How does the scoreboard work?
The board ranks each player’s best saved solo practice score for this game. Equal scores share a rank. Use Refresh scoreboard after saving a result. Practice points are browser-reported, not verified competition. Online match results stay in their private rooms.
What is the history of Stackfall?
The falling-block lineage was popularized by Tetris, created by Alexey Pajitnov in 1984. Stackfall is an original genre adaptation with its own identity, simple rotation kicks and scoring. Its Marathon emphasizes survival, Sprint targets forty lines, and the later cooperative idea changes the rhythm: two people alternate pieces on a shared board without a gravity timer. It is not an official Tetris product.
Do I need to install anything?
Play in a modern browser with JavaScript enabled. No separate game download is needed. Available keyboard and touch controls are described in the playing guide.