Based Evolution

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Evolution was a League Modification (or Rule) first implemented in the Season β12 elections with the passing of the Based Evolution Decree, stating that "Every Third Championship a Team wins will cause the Team and its Players to Evolve. Players that round the phylogenic Bases will get to go Home."

Evolved Teams gain a special customized team Modification, while evolved players gain a protected star in each category and an additional item slot.


Evolution is a mechanic that was originally introduced during the Season β2 elections as a Decree. During the Season 2 election, the Evolve Decree stated "The team with the most fans will Evolve.". It however did not pass, and was outvoted by The Fourth Strike and Peanuts.

In the Season β12 elections, Based Evolution was offered as one of three possible Decrees the community could vote on to go into effect, alongside the following:

  • Title Belt Win the Championship to claim the Belt, then Defend it in Title Matches next Season. The Holder of the Belt is protected from Steals and Swaps and guaranteed a Postseason Birth. Should the Holder win the Championship, they will claim a Title.
  • Pennants The Champion of each season will play the following season under Pennants, starting every game at a severe disadvantage. Win the Internet Series under Pennants in order to Repent.

Based Evolution passed with 247,049 Votes, 53% of all Decree Votes, alongside the following message:


Based Evolution

For every third Internet Series championship a team wins, each player on that team's current active roster (i.e. not including Shadows) advances by a single evolutionary "base" (the first evolution being from "Base" to "Base 1"), and the team is granted a unique permanent modification thematically related to the specific team. Player evolution is a one-off effect – unevolved players transferred to evolved teams will not evolve, and evolved players transferred to unevolved teams will retain their evolutionary level.

If a player has the Base 1 evolution, their first star in each category is protected, indicated by that star turning gold and gaining a circle around it. The player then can never have their stars reduced below that level, meaning Base 1 players will always have at least one star in each stat category. As of the introduction of the Items tab at the end of Season 15, evolved players also unlock a number of additional item slots corresponding to their evolution – for example, Base 1 players have two available item slots instead of one.

Evolved Teams

Team Times Evolved When Team Modifications
Atlantis Georgias 🔱 1 Unknown; by Season β12  Undersea
Baltimore Crabs 🦀 1 Unknown; by Season β12  Carcinization
Core Mechanics 🛠️ 1 Unknown; by Season β12  Maintenance Mode
Ohio Worms 🐌 1 Unknown; by Season β12  Bottom Dweller
Hades Tigers 🐅 1 Season β12 Election  Ambush
New Hampshire Eggplants 🍆 1 Unknown; by Season β22  Nightshade[note 1]
Canada Moist Talkers 🗣️ 1 Season β23 Election  Flood Bath

Evolved Players

A screenshot of Evelton McBlase II with the Base 1 evolution.

Players have been able evolve without their team on several occasions due to blessings including:

A full list of players with Base 1 Evolution can be found here.

A full list of players with Base 2 Evolution can be found here.


Day 40 Baby Doyle of the Breckenridge Jazz Hands nullified Based Evolution by scoring ten runs under the Black Hole (Black Hole).

  1. Assumed to be an Evolution mod.