Endless Tower: floor strength and tickets

Floor strength

At floor $f$ (relative to a rank E monster):

$\mathrm{HP} \times 1.0155^{\,f-1},\qquad \mathrm{damage} \times 1.0125^{\,f-1},\qquad \mathrm{XP} \times \min(25,\ 1.009^{\,f-1})$

• Monsters per wave: $\min(12,\ 3 + f/8)$.
• Elite chance: $\min(45\%,\ 5\% + 0.15\%\,f)$.
• Shards of a floor: $\lfloor 5 + 0.6 \min(f, 3000) \rfloor$, ×4 on a boss floor.

Tickets

A paid ticket costs $\mathrm{round}_{50}\!\left(200 + 15f + 0.1\,f^2\right)$ shards, where $f$ is the floor of the checkpoint you start from (0, 25, 50...): 650 shards from floor 25, 2,700 from floor 100, 7,200 from floor 200, 32,700 from floor 500. You get 1 free ticket a day (UTC day).

Full guide: Endless Tower.