The Tower Tool

Elite Spawn Rate Chart

Compare the wave where each tier reaches a displayed elite chance, switch between single and double elite thresholds, and see why T15 to T16 is the standout jump.

If you can survive the T15 to T16 jump, the extra elite timing pays back fast.

Key Breakpoint T15 to T16 The single-elite curve breaks the usual pattern here.

Single Elite Gain 73 to 389 Waves saved at T15 to T16, depending on displayed chance.

Double Elite Gain 389 to 595 Waves saved at T15 to T16 for the second elite threshold.

Display Rule 33% is not the cap 33% means one elite is guaranteed. 100% means two are guaranteed.

Spawn mode Switch between first and second elite thresholds.

Displayed chance per elite The game shows per-elite chance, not the full shared pool.

Upgrade step Compare any tier jump, with T15 to T16 selected by default.

T15 threshold Wave 686

T16 threshold Wave 411

Saved 275 waves earlier

A real breakpoint

At 8% displayed single-elite chance, T16 reaches the threshold at wave 411 instead of wave 686.

Average Earlier 36.2% Across all displayed chances for the selected step.

Biggest Jump 0.33% chance 64.0% earlier for the selected step.

At 33% 389 waves This late-game checkpoint arrives much sooner.

The shaded band marks the selected upgrade step.

Most tier upgrades move thresholds about 10% earlier. T15 to T16 is the outlier.

Single Elite

Lower wave means the displayed chance arrives sooner. T16 is highlighted.

How the display works

Vampire, Ray, and Scatter share one elite spawn pool. The game shows that pool as a per-elite number, so 1%, 4%, 9%, and higher totals appear as 0.33%, 1.33%, 3%, and so on.

33% vs 100%

A displayed 33% means you are guaranteed at least one elite each wave, with a chance at two. A displayed 100% means two elites are guaranteed every wave.

Combat rules

Elites are immune to Orbs, Death Ray, Shockwave, and Black Hole. Defeated elites drop Elite Cells. Each elite type has an on-screen cap of 8, and Scatter children do not count toward that cap.

Why T16 matters

For most upgrades, elite thresholds shift earlier by about 10%. Single-elite timing at T15 to T16 is much larger than normal, which is why that step feels so rewarding if your run can survive it.