Hi! I really enjoyed the game! Btw I like playing games like this one, and I would like to make one too. Do you know which is the best site to make 2d pixel games?? I would be very happy if someone will answer to me :)
I wouldn't know myself, but I can tell you the only good browser game making tool is Scratch, which is very limited in options and only good for beginners.
This was made using unity which is free to download and use for personal use. Bit of a steep learning curve but there's plenty of tutorials out there that can help teach you the ropes.