Try it:

In the folder some_builds you can find the executables for the latest version of Math Challenge for Windows, Linux and Mac.

Math Challenge is one of the first games/prototypes I made with the Godot Game Engine (https://godotengine.org/ ).

It is a game about doing fast calculations with the basic operations +, -, *, /

There is a countdown clock that refreshes every 10 answers, with a progressively lower amount of time added to the clock. Each time the player gains additional time, the difficulty of the questions increases.

All quizes are procedurally generated, based on an algorithm contained in quiz_generator.gd. The function used in the current state is ultimate_generate_quiz()

  	func ultimate_generate_quiz(lvl):
  
		var two_numbers = operation_difficulty(lvl)

		var string_to_print = ""
		operation = operations[randi()%4]
		randomize()
		if randf()<0.5:
			num1 = two_numbers[0]
			num2 = two_numbers[1]	
		else:
			num1 = two_numbers[1]
			num2 = two_numbers[0]	

		if operation == "+":
			result = num1 + num2
			string_to_print =str(num1) +" "+ operation +" "+ str(num2)
		if operation == "-":
			result = num1 + num2
			string_to_print =str(result) +" "+ operation +" "+ str(num1)
			result = num2
		if operation == "*":

			result = num1 * num2
			string_to_print =str(num1) +" "+ operation +" "+ str(num2)
		if operation == "/":
			if num1 == 0:
				num1+= randi() % (10)+1
			result = num1 * num2
			string_to_print =str(result) +" "+ operation +" "+str(num1)
			result = num2


		return [result, string_to_print]

Game requires some fixes and visual enhancement, but right now it is in a good state and playable.