v269 GMS Star Force Calculator

Success rate & cost by star per attempt

	Mode 1	Mode 2	Mode 3	Mode 4

Destroy chance by star per attempt

	Mode 1	Mode 2	Mode 3	Mode 4
15 → 16	2.10%	1.40%	0.70%	0%
16 → 17	2.10%	1.40%	0.70%	0%
17 → 18	6.80%	4.25%	1.70%	0%
18 → 19	6.80%	4.40%	1.80%	0%
19 → 20	8.50%	6.16%	3.60%	0%
20 → 21	10.50%	7.50%	4.00%	0%
21 → 22	12.75%	8.80%	4.50%	0%

Per-star strategy mode & safeguard by star

★	Mode	Safeguard	Boom	Cost

Each step picks its own mode. Safeguard (15–17★) only stacks on Mode 1.

Optimize plan auto-fill the matrix

Meso budget (billions) Spare items (booms you can take)

Finds the mode & safeguard plan with the best chance of reaching your target for your meso budget and spare count — searching every combination for stars 15–21 in the current → target range, then filling the Per-star matrix. Uses the modifiers (item level, event, MVP, star catching) from the form on the left.