2D is actually great for people who are at ease for playing it but currently we are on advance stage and I think having a 3D selection for users is a good addition since not all loves 2D Like me I found it boring since I feel like left behind for playing it and maybe 3D is good in terms on counteraction movement of the player on game time.
I see what you are saying but the thing here is that this game is meant to be played 2D. If you transform it into a 3D game, then you would have to change the game entirely which I think the OP doesn't want. OP can't please everyone so if he can't please you with his work, then we can't do anything about it (But you can if you try the game
).
Game developing is hard. You can't just change something just because you want to in a short time (especially the design of 2D into 3D). Also take note, 3D game developing is more complex than 2D because of so many dynamics you have to put in their rules. The OP is not getting payed yet for his time and he is a single developer so making a 2D game that looks good like this is impressive.
Actually it's just a little piece of suggestion and having a option is great since it will make appealing to both 2D and 3D game lover but anyways It's all matter on the OP choice since he is the one who develop this beautiful game and It's really good thing to see the involvement of bitcoins on the game.
2D is actually great for people who are at ease for playing it but currently we are on advance stage and I think having a 3D selection for users is a good addition since not all loves 2D Like me I found it boring since I feel like left behind for playing it and maybe 3D is good in terms on counteraction movement of the player on game time.
Actually, 2D Games are pretty popular nowadays, most people feel nostalgic playing 2D games since it resembles some of the old popular 2D games in their childhood, you know, like those mushroom loving brothers rescuing a princess?
To OP, the game design for this one is actually pretty decent and I like how you've incorporated
BTCitcoin, Fiat, Trading and other cool stuff into this game. I would really love to play this one.
One suggestion though, do not make the game difficulty so high 'cause it could usually take the fun out of the game and make it just plain frustrating.
Actually I agree to that since we all start at 2D game back days but it's kinda good to see some good innovation nowadays so that these game will compete to the other who came out first.
But anyways I think there's an option on which difficulty will suits you since it's a game and that will test your skills. And also hopefully there is a reward system will impose by playing the game so that players will feel inspired to play and earn on this game.
The graphics are a bit dated, but it is a android game 
Good luck, it looks fun. (1980 Arcade theme) 
