superku, looks nice but did you just place a few thousand static entities or can you run around already (farther than 80 blocks)? can you tell us some more details about how you did it? how did you do the visibility check so that only the surface blocks are visible?
(btw. as far as i know mipmap filtering is good for performance. not bad.)
damn, i have so many minecraft inspired ideas for games now but unfortunately i would have to do my own engine for most of them and i don't have much experience in that.