Tetris/Tertris/Hextris/Welltris should be mostly playable now, even on those
In Tetris and Welltris: for units > 4 use reflection key (home key for one);
for units < 3 (with diagonals) rotation key is turned off.
Let me know of any problems here. I am still looking at adding more stuff
to these. The Java below has more features, but can no longer run in your
browser ... sigh.
Just added "Show Next".
Android Tetris and Welltris
Unzip somewhere and then put in Eclipse like
File->Project->Android Project from Existing Code. Then build, install,
and run as usual. Any trouble building and getting on your Android, let
me know so I can make fixes or better instructions.
Click on one of the games below to
run Java program (need Java 8 JVM) written mostly by David Bagley.
A few updates recently on getting the look better including a frame
around field. The X Manual Pages are written for the X versions but
may be useful to understanding the Java programs. You can download
the jar file (preserve the extension), and then it can be run as an
application by prefixing the jar file name with "java -jar ". (The
puzzles used to be able to run as applets but browsers and Oracle
have dropped support.)
See project notes
for todo list and history.
Please let me know if I left out anything.
X Tetri (and Windows too)
Manuals for altris, see table above.
C/C++ Source Code for X and Windows
(altris 8.2.7, xz'd files)
C/C++ Source Code and Binary for
Windows (waltris zip'd file, same source as above compiled with
The background icon is not random... its was found with the help of
Stephen Montgomery-Smith's polyomino search program. There are 2
sets of all the seven quadrominos in an 8 by 8 square where the
holes are in an 8 queens arrangement. Except for the square
quadromino, all quadrominos are in a different orientation and not
touching a similar quadromino, even if tiled. Also the holes do not
touch each other diagonally, if tiled. The intent is to show the
worst game, where each line is almost filled.
Send comments/suggestions to:
Maintainer's Home Page
Last Revised: 29 December 2020