head to head
Crypt of the NecroDancer asks more than Tetris Effect: Connected, and the gap is optimization.

Execution · Pure Mechanics
Rhythm roguelike that fuses dungeon crawling with beat-matched movement.

Execution · Pure Mechanics
The classic execution-under-acceleration test wrapped in an immersive audiovisual experience.
Crypt of the NecroDancer leans Execution (Pure Mechanics); Tetris Effect: Connected leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Crypt of the NecroDancer
Rhythm-locked inputs on every beat punish any miss.
Tetris Effect: Connected
Precision placement under acceleration is the entire skill ceiling
Tetris Effect: Connected leans a little harder on reads, though the gap is small.
Crypt of the NecroDancer
Enemy movement is fully scripted patterns.
Tetris Effect: Connected
Zone-battle opponents exist but format leans on execution
Crypt of the NecroDancer leans a little harder on variance, though the gap is small.
Crypt of the NecroDancer
Procedural dungeons and item drops add some swing.
Tetris Effect: Connected
Piece bag is bounded random but quickly mappable
Crypt of the NecroDancer leans clearly harder on optimization.
Crypt of the NecroDancer
Enemy patterns and routing are solvable once learned.
Tetris Effect: Connected
T-spin and stacking strategy is knowable but execution overrides it
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.