Well... Not multiplayer but i have a few simple one's (chances are some of these you heard of - other's likely not)
Motherload (Similar to dig dug without monsters... It's a fun one though, there is a fight at the end of each "level" but nothing action like)
http://www.xgenstudios.com/play/motherloadSame game but some have trouble saving on xgen's site
http://www.miniclip.com/games/motherload/en/Various interesting game's at popcap
http://www.popcap.com/online_games.phpHere's a forum for a game in development based off of a game i have played for years (seriously, i still have not beaten it - it's sort of similar to the wizardry game's but has it's own style)
I dont know when it will be released - but you can find the demo for the origional mordor on there... i warn you though that the demo can be addicting and it allow's you unlimited play up to the third level of the dungeon (you cannot move below) You can switch your character's over to the paid version if you choose to buy it.
http://mordor.uni.cc/The_Unofficial_Mordor:_The_Depths_Of_Dejenol_CommunityIf you like it enough to play it as long as i have - it's worth it, personally i think you will know if you will keep with it by the time you finish the demo since i have spent more time in it than i have beating some console games (heck maybe all of them)
Then again - to a certain extent im an old school gamer.