GH/CH is combo-based, but only pretty loosely. Notes are worth 50 points baseline, a 2-note chord is 100 points, 3-note 150, etc. Hold notes are 25 points per beat. Hit 10 notes in a row to raise your combo multiplier by one, up to 4x (so 0-10 note combo is 1x, 11-20 is 2x, etc). Activating star power doubles your multiplier temporarily.
Each song has it's "base score", which is just "number of notes * 50" - basically if you hit every note, but intentionally overstrummed to break your combo between each one. A 3-star requires the base score. 4-star is 2x base, 5-star is 2.7x, 6-star is 3.6x, and 7-star is 4.4x.
It's a pretty straight-forward system, just not explained well anywhere.
GH/CH is combo-based, but only pretty loosely. Notes are worth 50 points baseline, a 2-note chord is 100 points, 3-note 150, etc. Hold notes are 25 points per beat. Hit 10 notes in a row to raise your combo multiplier by one, up to 4x (so 0-10 note combo is 1x, 11-20 is 2x, etc). Activating star power doubles your multiplier temporarily.
Each song has it's "base score", which is just "number of notes * 50" - basically if you hit every note, but intentionally overstrummed to break your combo between each one. A 3-star requires the base score. 4-star is 2x base, 5-star is 2.7x, 6-star is 3.6x, and 7-star is 4.4x.
It's a pretty straight-forward system, just not explained well anywhere.