I've not much experience but i've found interesting:
-Dungeon Minder (you aren't the hero but his fairy and you must ensure his suvivability by buff or debuff on enemies, nice idea, replayable caus you must chose between different magic upgrades, has humor).
-A Quest Too Far (you start as an old and strong hero and the you will decay, nice concept)
-Sword In Hand (just played 2 match, funny)
-DoomRL (surely more complex of the above but very fun and immedaite, now it has very nice tiles, with music and sounds).