Chaos Zero Nightmare Tools
Plan your pulls and test your luck — built on the game’s real gacha rates.
Two tools built around the same verified pity model: a planner that tells you the odds and crystal cost of hitting a rate-up unit, and a simulator that lets you feel the pull before you spend.
Frequently asked questions
Are these tools official?
No. They are fan-made calculators for Chaos Zero Nightmare. The 5★ rate model they use is drawn from community data cross-checked across multiple sources.
Do the results affect my real account?
No. Everything runs in your browser for planning and fun only. Nothing connects to the game and nothing is spent.