Pocket Dimension 1 is a 3d grayscale Dungeon Crawler from a company of the same name. It is roguelike with random items and a (I think) randomly created 10 Level Dungeon.

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Their website is still active. Description ...

Pocket Dimension 2 is a more advanced sequel to the original Pocket Dimension by the company of the same name. The Dungeon is not random, but color has been added if your palm supports it, as well as character classes and other improvements. A pdf ...

Realm Walker is a top down random world RPG released by MassiveCreations in 2004. Their website is gone but available on wayback. It was online in 2007 but gone in 2008.

The zip includes the color and greyscale versions of the game, a manual, ...

A text-based, table talk-style role-playing game where you explore Ashkelon, the ruins of a lost ancient civilization. On the left side of the screen, you'll see the main window with status from top to bottom ("!" is displayed when there's a message ...

Secret of the Orb: Gold Edition is the newest release of the epic Action/RPG title for the Palm platform. You will journey across deserts, over mountaintops, through caverns, and into the heart of a lost civilization in your quest to ...

Solskia is an isometric role-playing game developed by Crimson Fire Entertainment for PalmOS and PocketPC devices.

It features gameplay that is very similar to the Diablo franchise complete with real-time combat, a quest system, and a bartering ...

The Quest is a graphically stunning, engaging and sinister world full of magic, music and provocative challenges.

Choose from five customizable races and an array of skills, attributes, weapons, armor and enchantments, then explore a huge ...

Tower of the Sorceror is a topdown RPG/ Puzzle hybrid, ported from the Dos version by Jeremy Gibson. Its incomplete as the Dos version had 50 levels and this one only 10. Its free to play with no registration required.

His website is gone but ...

This is a Russian CRPG that heavily borrows from the world of XCOM. Some translation issues, but very readable.

From the original release:

This is step-by-step role playing game. Action occurs in 2240. The Earth was occupied by aliens ...

Origin's Ultima 1-3 were converted and updated with new features to Palm by 'Software by Paul". All 3 games now have a 4 member party, character classes, spells, and other enhancements. The website is still up with the demos, but the full versions were ...