Mardek is a Final Fantasyesque RPG (J-ish, but from a British developer) implemented in Flash; at present, there are three of a projected eight chapters.
Oddly, game characters on the map are tiny pixelated creates like something from NES days, while dialog and menu images of the same characters are pretty nice cartoon art; perhaps this is an attempt to have things both ways -- retro and not too retro.
Combat is the usual JRPG tedium; you have a party of characters, attacks are triggered in sequence, you can use items and spells and such. And as usual there are scads of wandering monsters, so you wind up fighting a lot of repetitive battles.
However, there's quite a lot of depth to the system for a Flash game -- character effects such as poison, antidotes, a large number of spells, and so on. There's a system of quests and a quest log and a fairly decent story arc.
Where Mardek works best, however, is in the dialog; the main characters, Mardek and Deugan, may be fantasy adventurers but they a bantering Brit sarcasm down. Not that the dialog is up to, say, Ben There, Dan That level, but it's a lot more amusing than the usual sturm-und-drang nonsense of most RPGs.
So worth playing? Sure, if you like the JRPG style and don't mind the combat.