
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.
| Level | Cost | Damage | Cooldown | Range | DPS |
|---|---|---|---|---|---|
| Place | 1,000 | 80 | 2s | 14 | 40 |
| Lv 2 | 800 | 90 | 1.75s | 16 | 51 |
| Lv 3 | 1,250 | 95 | 1.5s | 17 | 63 |
| Lv 4 | 1,500 | 110 | 1.25s | 18 | 88 |
| Lv 5 | 2,500 | 125 | 1s | 19 | 125 |
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
The game's own count across all players, read on Oct 31, 2026.
Related Values
FAQ
How many Astro exist?
42,175,089 Astro exist in Slop Tower Defense.

Astro
Legendary
| Rarity | Legendary |
| Version | Standard |
| Exist | 42,175,089 |
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