Although billed as compatible with all light gun enabled games, the fact of the matter is the only Xbox game that currently meets those specifications is
House of the Dead III! But the Mad Catz
Blaster, which is a very cool and rugged looking device, works well with
House of the Dead III, and has an integrated D-Pad, which allows it to work with other games as well.
The Blaster is a rather large light gun, and is really meant to be held with both hands. Most of the buttons are easy to get to, even for those of us with small hands. Its features, from auto-reload to multi-blast, are nicely integrated into the device, and this one blaster should serve you well for many years to come.