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🧱 Upside-Down Block Stack

⚠️ PC recommended - keyboard controls required

⚡ Quick Start

Blocks fall upward instead of down — gravity is reversed!
Training Mode: Customize speed, direction, and starting lines
Arcade Mode: Progress through 15 levels — clear 10 lines per level to advance
←→ or A/D: Move piece left/right  |  ↑ or W: Soft drop (upward)
Z: Rotate left  |  X: Rotate right  |  Space: Hard drop
Shift/C: Hold piece  |  P: Pause  |  ESC: End game
For Normal mode (↓), ↓ or S is soft drop instead
NEXT
Level: 1 Lines: 0 Score: 0
Your Results
📘 Detailed Instructions

What makes this different:

In traditional block-stacking games, pieces fall downward. In Upside-Down Block Stack, pieces fall upward — gravity is reversed! You still clear horizontal rows, but your brain has to adapt to the inverted spatial orientation. This challenges your cognitive flexibility and trains your brain to process reversed visual information.

Game Modes:

Direction Options:

Scoring:

Keyboard Controls (Upside-Down mode):

Keyboard Controls (Normal mode):

Tips for Upside-Down Mode: