Tomes of Mephistopheles (ToM) has gotten a lot better with the 4th and 5th alpha releases. For one thing, the game is a lot more challenging: Instead of one skeleton off by himself, there are now gangs of them roaming the dungeons. Also, instead of passively standing around while I attack them, the new AI actively engages the player. This is a heck of a lot of fun, especially now that some of the skellies cast fireballs and one is huge.
The latest ToM alpha has reworked the potions so that they deliver less health/mana and damage done by the AI has increased. Also new is a multiplayer mode, which I haven't tried yet. It appears to be direct connect as opposed to browsing a list of "servers".