Support
FAQ
Answers to the most common questions.
Q: What is the purpose of this site?
A: This site provides simulation tools and resources for tower defense games, helping you plan DPS, upgrades, traits, relics, and team setups more efficiently.
Q: Does it work on mobile?
A: Yes. The UI is designed to be mobile-first and works well on smaller screens.
Q: Is the tool free to use?
A: Yes — all features are free. This is a community project made to help players.
More calculator FAQs
What is SPA?
Seconds per Attack. Lower SPA means faster attacks.
How is DPS calculated?
DPS = damage / SPA. Trait/Relic/level modifiers apply to damage and SPA, then recompute DPS.
Do two traits stack?
Trait slots cannot hold the same trait. Different traits apply multiplicatively in sequence.
Why may results differ from in-game?
Hidden multipliers, enemy DR, crit/passive effects, or outdated data. Use as guidance, verify in-game.
What is DPS per cost?
Final DPS divided by placement cost, used to gauge value.
How does reroll probability work?
Success = 1-(1-p)^n; attempts for probability P: n = ceil(log(1-P)/log(1-p)).
Do relic sets stack?
Relic bonuses multiply with traits/levels; sets can be extended via data JSON.
How is upgrade efficiency ranked?
By ΔDPS / ΔYen for each upgrade step; highest ratio is the best value.
What is mode fit?
TTK vs time limit plus weighted scoring from the mode preset.
How to share results?
Tool Dock state is encoded in the URL query. Copy the link to share the same inputs.