Bug Evolution: All Bugs & Evolution Tree
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Here is every bug we have confirmed in Bug Evolution, with its tier, evolution level and where we saw it. The in-game Bug Tree has an Evolution tab and a Robux Spiders tab, with tiers from T1 to T6. Higher tiers still show as "???" until you unlock them, so this list grows as players reach them.
Evolution tab: confirmed bugs
| Bug | Tier | Level info | Seen in |
|---|---|---|---|
| Spiderling | Starter | Evolves to Garden Spider at Lv 12 | VendoPlus tutorial |
| Garden Spider | T1 | Seen at Lv 48 in players list | itzkennyplyzYT |
| Grasshopper | T2 | Seen at Lv 31 | itzkennyplyzYT |
| Black Widow | T3 | Seen at Lv 43; "NEXT" in Bug Tree | itzkennyplyzYT, NoobBlox |
| Locust | T3 | "NEXT" in Bug Tree | NoobBlox |
| Young Fly | to be verified | Evolves to Mosquito at Lv 40 | itzkennyplyzYT |
| Mosquito | to be verified | From Young Fly at Lv 40 | itzkennyplyzYT |
| Housefly | to be verified | Stat card at Lv 17 | NoobBlox |
| Wolf Spider | T4 | Seen at Lv 53 (966 HP) | itzkennyplyzYT |
| Tier 5 forms | T5 | "???" in Bug Tree | NoobBlox |
| Tier 6 forms | T6 | "???" in Bug Tree | NoobBlox |
Exact names of T5 and T6 bugs are not public yet. The Robux product names "Buy Next Spider [T2]" through "[T6]" confirm that the tree currently goes up to Tier 6.
Robux Spiders tab
| Spider | Price |
|---|---|
| Emerald Spider | R$49 |
| Neon Peacock | R$59 |
| Frost Spider | R$65 |
| Obsidian Widow | R$69 |
| Magma Tarantula | R$79 |
The Prehistoric Bugs [FOREVER] product (R$299) unlocks a set of prehistoric bugs; the exact bugs inside are to be verified. Stats of Robux spiders compared with free forms are also to be verified.
Spiders vs other bugs
The game started as a spider game ("Become the strongest Spider!") and the description now says you "evolve into a bunch of different bugs". In practice there are spider lines (Garden Spider, Black Widow, Wolf Spider) plus insect lines (Grasshopper → Locust, Young Fly → Mosquito, Housefly). Fly forms get FLY/DOWN buttons and a Proboscis ability.
Upcoming bugs
The developer promises "new bugs coming soon". The Giant Mosquito event on November 5 adds new enemies; whether it also adds playable bugs is to be verified. See Events.
Every known bug at a glance
The cards below show every form we have confirmed in Bug Evolution so far. The Spiderling is where every player starts. At Lv 12 it becomes the Garden Spider (Tier 1). The Bug Tree then lists the Grasshopper (Tier 2), the Black Widow and Locust (Tier 3) and the Wolf Spider (Tier 4). A separate fly line runs from the Young Fly to the Mosquito at Lv 40, and the Housefly appears on a Lv 17 stat card. Tier 5 and Tier 6 still show as "???" in the tree.
The cards are our own illustrations, not in-game models. Their colours are approximate and their unlock levels are marked to be verified unless a gameplay clip showed them. For how strong each form is, see the Bug Evolution tier list. For the exact button presses, see how to evolve.
Spiders vs insects vs flies
The game started as a spider game ("become the strongest Spider!"), and most forms are still spiders. Insects such as the Grasshopper and Locust and flies such as the Young Fly, Housefly and Mosquito were added later. The developer's description promises "new bugs coming soon". Flying bugs get Fly / Down buttons, and the Mosquito line has a Proboscis ability (see stats and abilities).
Robux spiders
The Bug Tree has a second tab called Robux Spiders. It holds the Emerald Spider (R$ 49), Neon Peacock (R$ 59), Frost Spider (R$ 65), Obsidian Widow (R$ 69) and Magma Tarantula (R$ 79). Their stats are to be verified. Full prices are on the Robux shop page.
Sources: prices, events and stats come from the official Roblox game page and public Roblox APIs (checked October 28, 2026, ~11 PM PKT). Gameplay details come from YouTube gameplay by NoobBlox, itzkennyplyzYT, VendoPlus and Saint G (October 26–27, 2026). Anything we could not confirm is labelled to be verified.
Video guide
Bug Evolution: All Bugs & Evolution Tree – FAQ
How many bugs are in Bug Evolution?
At least 9 free forms are confirmed plus 5 Robux spiders, across tiers T1–T6. Tier 5 and 6 names are still hidden.
What is the highest tier in Bug Evolution?
Tier 6, based on the Bug Tree and the "Buy Next Spider [T6]" product.
How many bugs are in Bug Evolution?
We have confirmed 9 evolution forms (Spiderling, Garden Spider, Grasshopper, Black Widow, Locust, Young Fly, Housefly, Mosquito, Wolf Spider), 5 Robux spiders, and 2 hidden ??? slots for Tier 5 and Tier 6.
What level do you become a Mosquito in Bug Evolution?
The Young Fly evolves into the Mosquito at Lv 40, as shown on the in-game evolve bar.