I'm so glad you have the main menu version of the game, I think I spent a good 10 minutes just mindlessly trading while listening to a podcast this is such a well made and relaxing game! Super easy to understand because of the fantastic presentation too, I immediately understood what the game was all about without needing any tutorial. Maybe the only change I'd possibly recommend is having the + and ? be different colors, I think it'd be very satisfying for the players to connect them to colors to play the game more efficiently