Update (01/27/2009 ) :
Master of Gizmo Till Harbaum has done a build of the latest svn source code and pushed it to maemo-extras. This build contains upstream performance increases, maemo bindings, and Tills graphics/menus/and packaging and proper xerces libs distribution. As a user of this game myself, thanks Till! I assume he also includes support for his Tilt accelerometer discussed here.

Primary Download Method : Download from maemo extras repo

Alternate Distribution (ext2 appliance) : If you have my isomount package installed, you can download this latest build in an autorunnable chroot appliance by extracting this 25meg tar.gz file to a directory such as '/media/mmc2/fsimgs/' and then creating a personal menu shortcut such as 'ext2run /media/mmc2/fsimgs/enigma-svn1477-75meg.ext2'

The above ext2 uses Till's build which depends on libosso and dbus, so if for some reason it doesnt run (due to missing /var/lib/dbus/machine-id file on main fs), you can use this alternate ext2 image

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If you are interested in seeing more you can browse the site here or even download the desktop version to see what its like :
http://www.nongnu.org/enigma/

User manaual : http://www.nongnu.org/enigma/manual/enigma.pdf

Its a lot of strategy, alot of arcade/finesse, and -alot- of levels... like 1000 levels. It has great level browser too (although you need to wait while it generates thumbnails).

Controls are :
Stylus : drag to move ball
DPad left/right : increase/decrease ball speed
- : Cycle to next inventory item
FullScreen : Use inventory item
+ : Skip to next level
Escape : return to menu