Short answer: Yes โ Tetris Online is absolutely worth playing. Here's the full breakdown.
Tetris Online is best suited for players who enjoy puzzle games and can invest 2-3 sessions to get past the initial learning curve. Players who only try one session before judging miss what makes Tetris Online compelling.
If you strongly dislike puzzle mechanics, Tetris Online won't convert you โ the core experience is puzzle through and through. Players who prefer story-driven or offline experiences may also find browser games unsatisfying.
Tetris Online earns its 4.7/5.0 rating. It's absolutely worth playing โ especially given that it costs nothing and requires nothing to try. Play 3 sessions before making your judgment.