3d, third person, free roaming game prototype for browser

We want to make a 3d, third person, free roaming game prototype that enables users to explore a virtual environment that resembles the environment of the Bahamas.


Features
1. The user can visit 3 different islands which resemble a palm beach or jungle environment. (No more than 300 steps in any direction)
2. Game has a ‘map feature’ where users can ‘jump’ between islands
3. User can freely explore the island (layout can be randomly generated)
4. User can jump on a ‘boat’ and sail between islands
5. As an example, the game can look similar to this:
Random Unity boat game
https://www.youtube.com/watch?v=pYKp64DGnrw
Dredge
https://www.youtube.com/watch?v=R_Vb-a2OLHc


Requirements
The game should run in the browser
For this first phase, we want a short demo that we can expand upon later
Only bid if you have done something similar you can quickly modify for us.
Show me an example of a previous project in your bid


Thanks