"io games": Massively multi-player, real time, no login, no rounds (continuous game), just type your name and play.
There probably were a few flash games like this, but didn't caught on like it has now.
There probably were a few flash games like this, but didn't caught on like it has now.
http://www.kongregate.com/games/CasualCollective/minions
http://everybodyedits.com was one of the first MMOs I played with no config (except a name and a map to join). In addition all of the maps were editable. So it was unique in that every map was completely user created.