Free typing game
Type falling letters or English words before they reach the city. Every accurate keystroke builds your defense; missed targets damage one of eight city blocks.
Choose a mode and press Enter or Start game
Nearest threat: Waiting for the next target
Typed: — · Next key: —
Threats: 0. The city is currently clear of danger.
Enter starts a round. P or Escape pauses. In Word mode, Backspace releases the locked word. Switching tabs pauses automatically.
WPM uses the standard five-correct-characters-per-word measure and counts active play time only.
Complete a round to create the first score on this device.
Each block can absorb two hits. A target aimed at a destroyed block transfers damage to the nearest surviving block, so every miss still matters.
Correct characters earn points. Completed words add a length bonus, targets cleared below the danger line add a risk bonus, and long clear streaks increase the multiplier.
Targets arrive faster as stages advance. Word mode also moves from short common words toward longer vocabulary.
TT archive
The game some Chinese players remember simply as “TT” belongs to a longer line of Kriya Systems typing software. Contemporary manuals, packaging, and reviews help separate the earliest version from the later DOS edition remembered by PC users.
1983–1984
Kriya’s U.S. trademark record claims first use of Letter Invaders on May 5, 1983. Independently verifiable packaging, a museum artifact, and a contemporary review document Typing Tutor III with Letter Invaders in 1984—the earliest product evidence we found for the familiar loop.
1987
The fourth edition expands the game with words, rounds, score history, and terrain that is destroyed by missed targets. Its blue-and-green DOS screens and richer sound options are closer to the remembered DOS version described here.
Later
The preserved DOS program launches from TT.EXE, and a surviving Chinese runtime demonstration also identifies Typing Tutor IV as TT. We present TT as an informal player name, not as the official title of a separate game.
Today
TypeBastion keeps the pressure of falling type and a vulnerable ground line, while using its own name, rules, scoring, word list, graphics, and synthesized Web Audio soundtrack.
TypeBastion is an independent homage and is not affiliated with or endorsed by Kriya Systems or Simon & Schuster. Typing Tutor and Letter Invaders are referenced only to document the history of the genre; no original program assets are used here.
TypeBastion does not require an account. Music preferences, mode and visual-style choices, the top five scores for each mode, and your latest round summary including weak keys are stored in your browser. Clearing site data removes them.
The page is readable on a phone, but the live game is designed for a physical English keyboard. TypeBastion does not show a virtual keyboard that would cover the playfield.
Yes. The game is free to play and does not require an account or email address.
No. Game input is handled in the browser. Preferences, high scores, and your latest round summary including weak keys remain on your device.
Modern browsers block automatic audio. Pressing Start provides the user gesture required to activate the original synthesized music and sound effects.
The round pauses automatically. Resume returns through a three-second countdown so targets cannot surprise you.
No. It is an original TypeBastion visual skin inspired by early DOS-era design language. It does not include the original program, logo, graphics, word list, or audio.