Bettys

A terminal-based Tetris clone written in Ruby, rendered with ncurses.

Game Modes

Mode	Description
Marathon (default)	Clear 150 lines to win
Sprint	Clear 40 lines as fast as you can
Ultra	Survive as long as possible — the clock counts down from 2 minutes
Infinite	Play forever with no end condition

Set the mode with --mode <mode> (e.g. --mode sprint). Start at a higher level with --level 1-15 or -n <level>.

Key Bindings

Movement uses a vim-style layout (h/j/k/l). Arrow keys also work.

Movement

Key	Action
`h` / `←`	Move left
`l` / `→`	Move right
`j` / `↓`	Soft drop (+1 point per row)
`k`	Rotate clockwise
`K` (Shift+K)	Rotate counter-clockwise

Advanced

Key	Action
`J` (Shift+J)	Hard drop — slam piece to the floor and lock instantly (+2 points per row dropped)
`H` (Shift+H)	Dash left — snap piece as far left as possible
`L` (Shift+L)	Dash right — snap piece as far right as possible
`c`	Hold — stash the current piece (once per lock). Swaps with the held piece (or pulls the next piece if hold is empty). Returns piece to default orientation and spawn position

Game Controls

Key	Action
`Space`	Pause / Resume
`q`	Quit (press twice if game is running — first press pauses, second quits)

Lock Delay Mechanics

When a piece lands and is resting on a surface:

It locks into place after 0.5 seconds of being grounded.
Moving or rotating the piece while grounded resets the lock timer (up to 15 resets per piece).

Running

gem install bettys
bettys

CLI Options

--mode, -m <mode>     Game mode: marathon, sprint, ultra, infinite (default: marathon)
--level, -n <n>       Starting level 1-15 (default: 1)
--help, -h            Show help

Scoring

Action	Points
Soft drop	+1 per row
Hard drop	+2 per row
Single (1 line)	100 × level
Double (2 lines)	300 × level
Triple (3 lines)	500 × level
Bettys (4 lines)	800 × level

Level increases every 10 lines cleared (max 15). Speed increases with each level.

Tests

ruby test/run.rb

bettys

Runtime