Netris Kombat

This is a combat-oriented online version of Tetris.

However, it's worth mentioning right away: alas, it seems that the true beauty and scale of this game was once only possible in battles with live opponents—up to 12 players. It worked like this: for destroying lines, you get a certain number of points – and have the opportunity to spend this "currency" on some kind of harmful bonus, which you then send to a random or specific (say, very lucky) opponent. The "sale" also included security features, though not against all the "surprises." The winner was the one who managed to "last" longer than the other participants.

It is reminescent of Super Puzzle Fighter, however designed for many more players.