Dragon Bane 1 is a Greyscale Dungeon Crawler RPG from Mythological Software. Their website is still online though it hasn't been updated since 2008. All links to purchase and activate the full game are dead.

From their website -

Dragon ...

SilverScreen Launcher is yet another launcher for Palm handhelds, with a myriad of themes available and compatibility with most devices makes it one of the most versatile launchers for the platform.

JAMDAT Bowling for Palm OS - Take mobile bowling to the next dimension!

Enjoy 3D graphics. Sophisticated controls for aim, ball spin, power and realistic physics deliver the feel and fun of bowling. Features user selectable ...

Read no further if you have deadlines to meet. Bubblet is a puzzle game for color and grayscale Palm OS devices that is simply addicting. Match similar patterned bubbles together in order to burst them from the board. The more bubbles you burst at ...

A source port of Quake for Palm OS originally by yoyofr92 and later enhanced by MetaViewSoft. May require UDMH if not enough dynamic memory is free.

ZQuake requires an external SD card. To install, put the included ...

NekoCat is a simple virtual pet simulator for Palm OS. Use the icons at the top right to interact with the cat!

What a cute little cat!

Hate Graffiti? Want a system that can actually read your handwriting? Then Jot by CIC is for you! Jot is already pretty powerful, but you can actually train it to your specific handwriting, and tune it to match your needs.

Jot was so successful ...

Six sides not enough? Roll a whole collection of dice arranged in a user-friendly layout that makes it easy to decide the fates of many different kinds of game. Dice Roller works great for D&D, Dungeon Crawl Classics, Pathfinder, and more. Tested ...

Agenda is a light-weight, yet functional replacement for Palm OS' somewhat limited Datebook. It contains an additional view, and the ability to add tasks with a checkbox that move along with the day as long as they remain unfinished, all this while ...

Pleco is an extensive Chinese dictionary and learning tool for Palm OS 5. In addition to a massive library of Chinese <-> English characters and words, Pleco also features complete audio pronunciations and hand-written character recognition for looking ...