fun game but need some fixing. (this is constructive criticism not bashing)
1) try to add a full screen option or get the game to recognize the screen size and adjust accordingly, i couldn't even see the items or what was needed to make them at first and had to manually zoom my browser to be able to play the game better. manual zooming a browser is a big red flag. very important to fix this.
2) tutorial didn't help me AT ALL. i didn't even realize i was the correct player or how to move the character until the tribe person was almost to their trading spot. need some details in the tutorial to tell the players what they are doing, how to do it and why. i failed the tutorial and that's not a good thing! nobody should every fail a tutorial, that's where they learn the core aspects of the game and they should not get frustrated doing it. if you make them feel bad in the tutorial they will just stop playing all together and move to a different game that they understand and don't get frustrated with.
3) after learning the tutorial with 1 character, the game begins with 4 that you have to control simultaneously. that is too much to start a game with that barely has instructions in the tutorial. create a level with 1 or 2 characters max to start the game. after successfully completing that level then you would add another character to control per level or maybe even every 2 levels. the learning curve for this game is INTENSE and its not intuitive enough for most players. tone it down some if you want to keep an audience.
4) personal opinion here, i don't think you should have to put your mouse over the tribe person to see what they want to trade. I could see you possibly having that mouse over requirement in advanced levels to increase the difficulty a bit but definitely wouldn't suggest that for the tutorial at all nor for the first level of gameplay.
5) if you drop a character on the same square you are currently occupying it will cause them to have to wait again. please correct.
This game has great potential but is lacking so much that it will cause players to walk away. please take these words of criticism as me trying to help you keep an audience interested and not me trying to bash the game. its a good game but needs significant work still and i hope you make the adjustments necessary. i would love to play this game in the future with these aspects put in place. keep up the good work!