- For the list of cards created specifically for the Lab mode, see List of cards from Labs
|“||"Ah, the sweet smell of science!"|
Labs are a more experimental take on game modes in Legends of Runeterra, having a focus on variety and experimentation. The rules of Labs change periodically, usually with patches, and each named set of rules themselves is called a Lab. Each Lab is usually available for limited amounts of time. It is accessed from the Play tab in the main menu of the game. Labs can be constructed. As of patch 1.16, players can choose to play one of a selection of three labs.
In Labs, a game mode board is forced, and there is no guardians, but the player can change their Card Backs and Emotes, which are by default all Calculating.... The cosmetic loadout can be changed in the main screen for the lab for most labs, and on the deck selection screen for pre-constructed and constructed Labs.
The first Lab, A.R.A.M., was available with Patch V1.5.
Some Labs have the player select from a set of pre-constructed Decks. They can also see the contents of, the names of, descriptions of, and covers of the pre-constructed decks before playing.
List of Labs
- V1.5 and was the first released. This Lab was temporarily available on patch
- V1.6 for the Spirit Blossom 2020 event and forced the Spirit Blossom Lab Board. This Lab was temporarily available on patch
- V1.7. This Lab was available on patch
- V1.8 for 20 days to celebrate the release of Set 3 (Call of the Mountain), and forced the Targon Lab Board. This game mode was temporarily available on patch
- V1.8 Micropatch, for 6 days, right after the end of the previous Lab. It forced the Targon Lab Board. This Lab was made available for the
Welcome to the Jungle
- patch 1.10, for 14 days. It forced the Jungle Lab Board. It is the first-ever constructed Lab where players make a deck or play one of the 3 premade decks. This lab was made available in
Journey To The Peak
- 4Leona or 2Diana to climb to Targon's Peak. If a player manage to complete the journey, they will earn a unique icon based on the champion they pick. This lab was made available in patch 1.11. This is the first ever single-player lab where players choose either
A Landmark Occasion
- landmarks introduced in the Monuments of Power expansion. It consisted of 5 pre-made decks, one for each landmark. This lab was made available in patch 1.12. This lab was introduced to showcase the new
- patch 1.13. A two-week lab introduced for the K/DA All Out event. The first week will have the player choose from premade decks showcasing the 5 new K/DA epic spells, each with its own special ability. The second week will allow players to bring their own pre-constructed deck and choose from the afore-mentioned abilities to use with it. This lab was made available in patch
- patch 1.14. A constructed lab that grants special abilities to decks made with specific constraints. This lab was made available in
Recursive Heroes 101
- patch 1.15. This is the first ever constructed singleton lab. The player can make a deck with one champion and one only one copy of each card in the deck, or play one of the four preconstructed decks. This lab was made available in
- Noxus deck using either 3Draven, 6Darius, or 5Swain. This lab was made available in patch 2.0. This is the first ever multiplayer co-op lab. The player can either play with friends or match with someone online. Both player choose one of three champions which then creates the deck for them to play. They both work together against a mono-
Lab of Legends
- patch 2.1. This is the first of what's known as a "Legends Lab", a single-player campaign-style lab where the player's deck grows as they progress through it. The player chooses their starting deck as well as a special ability, and they'll get more options for abilities, cards, and buffs to add to the deck as the earn wins. This lab was made available in
- patch 2.2. This is a PvP lab where the players start with a pre-made deck of random cards and 4 mana. At the beginning of each round, instead of gaining mana, the cost of all player's hand and deck is reduced by 1, down to a minimum of 1. This lab was made available in
United Front PvP
- patch 2.3. A PvP version of United Front Lab. The player can either play with friends or match with someone online. Both players choose one of three champions which then creates the deck for them to play. This lab was made available in
Ultra Rapid Draw
- Ultra Rapid Fire game mode in League. It is a faster variant of Quick Draw. This lab was made available in patch 2.5. This is a PvP Lab in reference to the
- patch 2.8. This is the first constructed multiplayer co-op lab. It's a 2v2 Lab in which players play individual 1v1s in a best of 3 format. Like with United Front, the player can either invite friends or be matched with another player online. This Lab was made available in
Lab of Legends: Saltwater Scourge
- patch 2.13. This is the second Legends Lab. Just like in Lab of Legends, the player chooses their starting deck. However, player progress would not start with choosing an ability. As players win games, they gain experience and gain rewards when they level up. Unlike previous Labs, there is a map on which the player can choose which path to go. They can also have options to interact with new locations like shops or healers in order to succeed the run. This lab was made available in
The Path of Champions
- The Saltwater Scourge and the classic Lab of Legends. It is further fleshed out, to include more elements from the rogue-like genre. It includes more random gameplay elements and encourages replayability with unlockable items and powers. It also has its gameplay split up into multiple episodes, all featuring different final bosses and unique decks. The Path of Champions launched with 15 champions, all with unique unlockable abilities. The lab was made public in patch 2.19, at the event's start. Influencers had early access 1-2 days before the event launched. This is the combination of
Trivia and Visuals
- Instead of Victory, Defeat, or Tie Game; in Labs, the end-game messages read Experiment Succeeded, Experiment Failed, or Experiment Inconclusive respectively, with unique visual and sound effects, to fit the theme of the mode.
- There is unique sound effects and animations that play while the Labs section in the Play tab is selected, to convey the environment of 5Heimerdinger's Lab. In patches 1.6 and 1.7, it had a modified different background with pink smoke, sparks, and lights.
- In Labs, the selected Emotes default to being all Calculating..., to fit the theming of the mode.
- In early Labs, the emotes couldn't be changed, so players could only use Calculating.... See Patch History.