Codes
Values updated 1h ago

About Astro

Astro is a Legendary unit in Slop Tower Defense. There are 42,175,089 in the game. It has no set trade value yet, so the trading hub is the place to see what players offer for it.

Stats

Fully upgraded, Astro hits for 125 every 1s, about 125 damage a second, with a Slow attack. Placing it costs 1,000 cash and all 4 upgrades bring the total to 7,050. You can place 3 at a time. It sees hidden enemies from upgrade 2.

Damage a second at max level125
Range at max level19
Cash to place and max one7,050
Placement limit3
LevelCostDamageCooldownRangeDPS
Place1,000802s1440
Lv 2800901.75s1651
Lv 31,250951.5s1763
Lv 41,5001101.25s1888
Lv 52,5001251s19125

Damage a second is damage divided by cooldown; splash, fire, bleed and the other effects add to it in a match. Try a trait in the damage calculator.

How to get Astro

  • The Space Crate (50 Stars): 33%, 1 in 3. It's not on sale right now.

Copies in existence

Astro42,175,089
Shiny Astro1,253,208
Void Astro163,182

The game's own count across all players, read on Oct 31, 2026.

FAQ

How many Astro exist?

42,175,089 Astro exist in Slop Tower Defense.