atari2600land has updated his two player simultaneous play variant of a very well known russian block game.

Release notes:

You may have noticed in the last version, the score turned red during certain times in the 2-player mode. I’ve fixed that. Please tell me if you see any red score or any suggestions/improvements I can make on this.

http://www.atariage.com/forums/topic/135837-tetris/page__st__75