CRTetris
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About this game
CRTetris III is a falling-block puzzle with configurable visual themes, music and sound. Its 1999 documentation describes a DOS-compatible build with a setup program for sound, input and theme choices. The ordinary gameplay still centres on arranging shapes to complete rows and preserve space above the pile.
Arrow Left and Arrow Right move a piece, Arrow Up rotates it, and Arrow Down lowers it. Z performs the drop action. Enter changes the displayed block set, so it is not the key to use when you want a piece to fall immediately.
Escape pauses and opens the menu, while the Pause key toggles pause directly. Begin with a clearly readable block set and check the landing space before using Z. Visual changes do not replace the need to leave room for awkward incoming shapes.
Start here
Quick tips
Use Z to drop; Enter changes the block graphics.
Choose a block set whose edges remain clear against the background.
- Arrow Left / Arrow Right
- Move the piece
- Arrow Up
- Rotate
- Arrow Down
- Move the piece down
- Z
- Drop
- Enter
- Change the block set
- Escape
- Pause and open the menu
- Pause
- Pause / continue
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Archive notes
Rights and Source Notes
Browser play uses the archived Freeware release. Official project references are listed below.
- Distribution
- Freeware
- Browser player
- js-dos · Browser play
- Added to archive
- 2026-07-26
- Official references