Spelunking Expeditions

"Run together to defeat the monsters!"

- In-game event banner

Spelunking Expeditions is a special Event game mode in Cookie Run: OvenBreak, added on September 28th, 2020 to coincide with the release of Melon Bun Cookie. This mode allows players to run with a group of players to defeat monsters. All players in an Expedition join and run on the same stage and try to get a high score as possible. The boss encountered is random, and can be defeated if everyone's total allotted scores in the Expedition outnumbers the boss health. Expeditions can be public or private, and can have a custom title and a chat.

Completing Expeditions gives Cheese Stones, the event currency that can be exchanged for the Cheddar Mine Appraisals Post Lobby design and other rewards.

Similar to Custom Runs, Spelunking Expeditions is introduced as a one-month event "for testing purposes and gathering player's feedback." Spelunking Expeditions is likely to return as a recurring event like Friendly Run, or possibly a full time game mode.

Mechanics
Participating in Expeditions costs Expedition Tickets. Similar to Hearts or Winding Keys, Expedition Tickets refill at a rate of one every 1 hour, up to a maximum of 15. 5 Tickets can also be bought for 300. One ticket is needed to join an Expedition, but it will be consumed only if the run has been started. For creating Expeditions, one ticket is consumed, but more tickets are not consumed for the first run.

There are three different difficulties, each containing 15 stages with varying bosses. All players can run in all difficulty stages, but each cave has a recommended level and player count. After choosing a stage, players can either join an Expedition or create one.

When joining a stage, a list of public Expeditions are shown, and there is also the option to select Quick Join, which puts the player in a random Expedition that still has space available. When creating an Expedition, the host sets the title, and whether or not the run is Private or have a chat room. The host of the Custom Run has the power to change all of the settings as long as the run has not started, and they can ban players, removing them and preventing them from joining that run again. If the host leaves, a random player is chosen to be the new host. They can also set the limit of Trophies required for the player to join the run, but would cost 200 to set so.

After joining or creating an Expedition, players are placed in a lobby, where they can see the other players. The Expedition can be started by the host if it has the recommended number of players in it. If any Cookies, Pets or Treasures are set to free choice, players can change their combi at any time until the run begins. In the lobby, players can communicate using emotes, mostly identical to Friendly Run's menu emotes. Players can only leave a lobby by tapping the Exit button, and can interact with other modes and menus while still keeping their place in the lobby. Repeatedly leaving lobbies without playing in a short time results in a small cooldown before you can join one again.

Expeditions can have up to eight runners. If space is available, players can tap empty spaces to invite friends or guildmates, or copy the Expedition ID and share it via social media. Other players can then enter the Expedition ID from the menu and join the lobby. If a run is set to Private, invites and the Expedition ID are the only way to join. Once at least the required number of players are there, the run can be started.