Modders have found a way around the 4-player limit in the game Peak with a popular mod called PeakUnlimited available on Thunderstore.
The mod removes the lobby limit, allowing more than four players to join a game, with only the host needing to have the mod installed.
The developers of Peak are supportive of modding and even fixed a bug related to the mod in their latest patch, showing appreciation for the modding community.
Unlike a previous experience with another game by the same developers, where modding was restricted due to server costs, Peak developers seem to encourage modding and have not faced server issues despite increased player counts.