I've taken note of the key phrase 'Monster Tribe for mac instal free' and extracted relevant information about the game Monster Tribe from the provided text.

Here are some key points:

* The game Monster Tribe is an upcoming adventure and RPG game developed by Boundless Games and published by Freedom Games.

* It will be released on May 1st, 2023, on PC via Steam and Epic.

* During the Freedom Games 2022 Showcase, the extended look and release date for Monster Tribe were announced.

* The gameplay involves forming a tribe, fighting in battles, and exploring an island filled with collectible creatures, a vast wilderness, and dangerous towers to restore harmony with the land of Akama.

Regarding the installation on Mac:

* Since there is no specific mention of a 'mac instal free' option, I assume you are looking for ways to install Monster Tribe on a Mac computer.

* According to Freedom Games' statement, the game is not fully Steam Deck Verified but is 'Playable' on Steam Deck. However, it may require manually switching the active controller via the Quick Access Menu.

* Unfortunately, there is no mention of a free installation option or a specific method for installing Monster Tribe on Mac.

If you need help with anything else, feel free to ask!